हेलो दोस्तों, आज के ब्लॉग में मै आपको प्रोटोटाइप मॉडल(Prototype Model) के बारे में बताने वाला हूँ जिसका उपयोग हम सॉफ्टवेयर को बनाने में करते है| और हम कह सकते है की यह सॉफ्टवेयर को निर्मित करने की क्रमबद्ध प्रक्रिया है|
प्रोटोटाइप मॉडल (Prototype Model) एक ट्रायल सॉफ्टवेयर होता है, जिसे कस्टमर को बनने वाले फाइनल सॉफ्टवेयर का आईडिया देने के लिए बनाया जाता है| इस प्रोटोटाइप मॉडल वाले सॉफ्टवेयर में कई खामिया और कमिया हो सकती है जिसे बाद में फाइनल सॉफ्टवेयर में सही कर लिया जाता है|
तो ये प्रोटोटाइप मॉडल (Prototype Model) एक टेस्टिंग सॉफ्टवेयर कि तरह होता है जिसे कम जानकारी के साथ भी डेवेलोप किया जा सकता है| ज्यादातर इन तीन परिस्थिति में इस प्रोटोटाइप मॉडल का उपयोग किया जाता है|
जब हमें सॉफ्टवेयर बनाने का उदेस्य पता हो पर हमें उसके टेक्निकल समस्या के बारे में ज्यादा जानकारी न हो तब हम प्रोटोटाइप मॉडल (Prototype Model) का यूज करते है|
कुछ परिस्थिति ऐसी भी होती है जहा पर सिस्टम बनाने के लिए हमें हार्डवेयर के रिस्पांस टाइम कि जरुरत होती है, तब ऐसी सिचुएशन में पहले हम प्रोटोटाइप मॉडल (Prototype Model) बनाते है|
सॉफ्टवेयर को बनाने के समय कुछ सिस्टम और सॉफ्टवेयर ऐसी होते है जिसमे हम पहली ही बार में करेक्ट सॉफ्टवेयर सिस्टम नहीं बना सकते, या फिर ऐसी सॉफ्टवेयर सिस्टम जहा यूजर कि इनफार्मेशन और रेक्विरेमेंट पहली बार में कम्पलीट नहीं होती, इन दोनों ही परिस्थिति में हम प्रोटोटाइप मॉडल (Prototype Model) का उसे करते है.
प्रोटोटाइप मॉडल (Prototype Model) में सबसे पहले जानकारी एकत्रित कर ली जाती है, जो की सॉफ्टवेयर को बनाने व उससे सम्बंधित होती है|
इस प्रोसेस में डेवलपर व कस्टमर मिल के डिसाइड करते है कि इस सॉफ्टवेयर को बनाने का उदेस्य क्या है| और इस हिसाब से वो सभी क्षेत्र में विस्तृत रूप से डिसकस करते है, और पता लगाते है कि अभी किस क्षेत्र में और जानकारी जुटाने कि जरुरत है|
और जब जानकारी जुटाने का काम ख़तम हो जाता है तब शीघ्र ही एक डिज़ाइन तैयार किया जाता है, और इस डिज़ाइन में बताया जाता है कि यूजर को इनपुट और आउटपुट विंडो में क्या दिखाई देगा|
PROTOTYPE MODEL
प्रोटोटाइप मॉडल (Prototype Model) के इस डिज़ाइन को यूजर और कस्टमर परखते है और उसकी जरुरत को और बेहतर बनाने के लिए या उसमे कुछ और जरुरी सुधार करने के लिए| यह एक हिसाब से कस्टमर की सभी जरूरतों को पूर्ण रूप से संतुस्ट करने का मॉडल है जो कि वह अपने सॉफ्टवेयर में चाहता है | इसलिए यह मॉडल सॉफ्टवेयर रेक्विरेमेंट कि दृष्टि से बहुत ही महत्वपूर्ण है|
जब एक वर्किंग प्रोटोटाइप मॉडल (Prototype Model) बना लिया जाता है तब डेवलपर प्रोटोटाइप को अलग कर देता है व फेक देता है, पहले से मौजूद प्रोग्राम जनरेटर कि मदद से|
मैथमेटिकल अल्गोरिथम कि कुछ क्लासेज, सबसेट ऑफ़ कमांड ड्रिवेन सिस्टम, और कुछ और एप्लीकेशन जहा पर रिजल्ट बड़े आराम से पता लगे जा सकता है, बिना किसी वास्तविक इंटरैक्शन के, को प्रोटोटाइप मॉडल (Prototype Model) के द्वारा आराम से बनाया जा सकता है|
प्रोटोटाइप मॉडल (Prototype Model) कि जरुरत कब पड़ती है?
ऐसी एप्लीकेशन जिनका प्रोटोटाइप बहुत ही आसान है और जो हमेशा अपने अंदर ह्यूमन मशीन इंटरैक्शन समाहित रखती है को बनाने के लिए प्रोटोटाइप मॉडल (Prototype Model) सजेस्ट किया जाता है|
जब हमें सॉफ्टवेयर बनाने का केवल जनरल उदेस्य पता होता है, लेकिन हमें इनपुट , प्रोसेसिंग एंड आउटपुट के बारे में डिटेल में कुछ पता नहीं होता| तो फिर ऐसी सिचुएशन में हम प्रोटोटाइप मॉडल (Prototype Model) उसे करते है|
जब सॉफ्टवेयर डेवलपर किसी अलगोरिथम की क्षमता के बारे में व किसी ऑपरेटिंग सिस्टम की अडाप्टेबिलिटी के बारे में ज्यादा आश्वश्त नहीं होता, तब इस सिचुएशन में प्रोटोटाइप मॉडल (Prototype Model) को उसे करना एक बेहतर विकल्प हो सकता है|
ड्रॉबैक्स ऑफ़ प्रोटोटाइप मॉडल : Drawbacks of Prototype Model
जब प्रोटोटाइप मॉडल (Prototype Model) का फर्स्ट वर्जन बनकर तैयार होता है तब कस्टमर खुद अक्सर इसमें छोटे मोठे फिक्स व चेंज चाहते है बजाये कि सिस्टम को फिर से बनाया जाये| जबकि अगर सिस्टम को फिर से डिज़ाइन किया जाये तो उसमे और ज्यादा क्वालिटी मेन्टेन होगी|
प्रोटोटाइप मॉडल (Prototype Model) के फर्स्ट वर्जन में बहुत सरे कोम्प्रोमाईज़ करने पढ़ सकते है|
कभी कभी सॉफ्टवेयर डेवलपर अपने क्रियान्वन में कोम्प्रोमाईज़ कर सकता है, प्रोटोटाइप मॉडल को जल्दी चलाने के लिए, और कुछ समय के बाद वो ऎसे कोम्प्रोमाईज़ करने में सहज और कम्फर्टेबले हो सकता है और वो भूल सकता है कि ऐसा करना बिलकुल अनुचित है|
इस प्रोटोटाइप मॉडल (Prototype Model) ब्लॉग को लेकर आपके मन में कोई भी प्रश्न है तो आप हमें इस पते a5theorys@gmail.com पर ईमेल लिख सकते है|
आशा करता हूँ, कि आपने इस प्रोटोटाइप मॉडल (Prototype Model) पोस्ट को खूब एन्जॉय किया होगा|
आप स्वतंत्रता पूर्वक अपना बहुमूल्य फीडबैक और कमेंट यहाँ पर दे सकते है|
दोस्तों इस ब्लॉग में मै आपको waterfall model के बारे में बताने वाला हूँ, जिसका अध्यन शायद आपने सॉफ्टवेयर इंजीनियरिंग में किया होगा या कर रहे होंगे | waterfall model सॉफ्टवेयर को बनाने की प्रक्रिया का एक प्रकार है! इसे linear sequential मॉडल अथवा क्लासिक लाइफ साइकिल(Classic life cycle model) मॉडल भी कहा जाता है!
जैसा की आप निचे दिए हुए चित्र में देख सकते है कि वाटर फल मॉडल(waterfall model) कि शुरुआत सॉफ्टवेयर बनाने की जरूरतों को एकत्रित करने(Requirement gathering) से होती है! और फिर अगले चरण में ये प्रक्रिया analysis, designing, coding, testing and maintenance phase से होकर गुजरती है!
Waterfall Model
Requirement gathering and Analysis
Requirement gathering and Analysis फेज waterfall model का बहुत ही महत्वपूर्ण होता है क्योकि यह एक सॉफ्टवेयर को बनाने की प्रक्रिया का पहला पार्ट होता है, और अगर यहाँ पर कोई गलती की जाती है तो वो पुरे सॉफ्टवेयर को खराब कर सकती है! इस फेज में सॉफ्टवेयर इंजीनियर द्वारा सॉफ्टवेयर से सम्बंधित सारी जानकारी एकत्रित की जाती है!
जैसे की सॉफ्टवेयर बनाने का उद्देस्य क्या है, उसके क्या क्या फंक्शन होंगे और वह कैसा बेहेवियर करेगा, इन सभी जानकारियों को एकत्रित करके एक डॉक्यूमेंट में समाहित किया जाता है! और इसके बाद कस्टमर के साथ कई डिसकसशन किये जाते है उनकी समीछा लेने के लिए. और जब कस्टमर और सॉफ्टवेयर इंजीनियर Requirement gathering and analysis से संतुस्ट हो जाते है तब एनालिस्ट(सॉफ्टवेयर इंजीनियर) अपने अगले चरण की ओर अग्रसर होता है!
Suppose that आपको लाइब्रेरी सिस्टम पर एक प्रोजेक्ट बनाना है, तब आप सबसे पहले लाइब्रेरी जाकर इनफार्मेशन कलेक्ट करंगे जैसे कि वह पर सिस्टम कैसे चलता है| आप निम्नलिखित बिन्दुओ पर इनफार्मेशन कलेक्ट कर सकते है|
लाइब्रेरी में बुक्स का मैनेजमेंट कैसे होता है, मतलब अलग अलग सेमेस्टर की सब्जेक्ट वाइज बुक कैसे राखी जाती है, जिससे की उन्हें आसानी से ढूंढा जा सके |
स्टूडेंट का रिकार्ड्स कैसे मेन्टेन होता है?
लाइब्रेरी बुक्स पर फाइन कैसे लगता है और कितना लगता है और कब कब लगता है?
ये सब Request gathering का हिस्सा होता है | और इसके बाद आप और आपकी टीम इस पर बैठ कर एनालिसिस(analysis) करते है और अपने अपने सुझाव प्रका करते है | This was all about the first model of waterfall model.
Design
सॉफ्टवेयर मेकिंग की प्रक्रिया में or in waterfall model, अगला स्टेप डिजाइनिंग(Design) का होता है! यह रेक्विरेमेंट एकत्रित करने और कोडिंग करने के बीच का स्टेप है! डिज़ाइन की प्रक्रिया निम्नलिखित बिन्दुओ पर निर्भर करती है!]
पहले चरण(Of waterfall model)) में एकत्रित की गयी जानकारी को कई छोटे छोटे मॉडल में कन्वर्ट करना पड़ता है जिससे की हम उसकी आसानी से कोडिंग कर सके! हम इस डिज़ाइन को डॉक्यूमेंट में उतार लेते है जिससे की कोडिंग करते टाइम हम इसे आसानी से समझ पाए!
डिज़ाइन फेज में हम मुख्य रूप से दो मॉडल पर काम करते है एक तो बैकेंड और डेटाबेस एंड फ्रंट-एन्ड डिज़ाइन और जी यू आई(GUI) डिज़ाइन, बैकेंड डिज़ाइन में हम फिक्स करते है की कितनी टेबल बनेगी एंड वो एक दूसरे से कैसे रेलेट होंगी और फ्रंट-एन्ड में हम तय करते है की कितने पेज होंगे और उन पर कंटेंट कैसे होगा मेनू कैसे होगा |
Coding
डिज़ाइन फेज के बाद अगला चरण(In waterfall Model) कोडिंग का आता है जो की बहुत ही महत्वपूर्ण चरण है! यहाँ पर सॉफ्टवेयर इंजीनियर द्वारा और डेवलपर द्वारा इसके पहले चरण में डिज़ाइन की गयी चीज़ो को मशीन रेडबले लैंग्वेज में कन्वर्ट किया जाता है! अगर हमारी डिज़ाइन अच्छी तरह की गयी होती है तो फिर कोडिंग बहुत ही इफेक्टिव होती है! इस फेज में प्रोग्राम बांये जाते है जिसे हम सॉफ्टवेयर प्रोग्राम कहते है जो की एक खास प्रक्रिया को पूरा करते है!
Testing
कोडिंग(Coding) के बाद जो अगला फेज होता है है वो होता है टेस्टिंग(Testing) का(In waterfall model), इस फेज में हम पिछले स्टेप में बनाये गए प्रोग्रम को टेस्ट करते है कि वो सही तरह से काम कर रहा है कि नहीं! टेस्टिंग करने का मेन फोकस उसकी लॉजिकल फंक्शनिंग चेक करना होता है! ताकि हम चेक कर सके कि जिस काम के लिए सॉफ्टवेयर को बनाया गया है वो काम सही से कर रहा है कि नहीं! For example- हमने एक सॉफ्टवेयर बनाया जो कि दो नंबर को जोड़ता है है और फिर उसका रिजल्ट हमें स्क्रीन पर दिखाता है! मतलब अगर यूजर कोई दो नंबर एंटर करता है तो उसका सम स्क्रीन पर आउटपुट के तौर पर दिखता है! अब अगर प्रोग्राम में कुछ गड़बड़ होगी तो ये जोड़ सही नहीं करेगा!
तो कहने का मतलब यह है कि टेस्टिंग फेज में सभी प्रकार कि प्रॉब्लमस त्रुटि जो कि प्रोग्राम में होती है वो सभी पहले खोजी जाती है बार बार प्रोग्राम को चला कर, और बाद में जब कोई त्रुटि मिल जाती है तो उसे सही किया जाता है! टेस्टिंग फेज में प्रोग्रम के सभी फंक्शन और पैरामीटर, बेहेवियर को चेक किया जाता है कि वो ठीक से काम कर रहे है कि नहीं!
Maintenance:
मेंटेनेंस(In waterfall model) एक लम्बी और सतत चलने वाली प्रक्रिया है, जब तक सॉफ्टवेयर चलता है तब तक यह प्रक्रिया भी चलती रहती है! मेंटेनेंस के अंतर्गत या तो सॉफ्टवेयर में आने वाली त्रुटि और दिक्कत को सही किया जाता है या फिर लोगो कि जरूरतों के अनुसार जानकारी लेकर सॉफ्टवेयर को अपडेट अथवा एनहान्स किया जाता है! यूजर कि रेक्विरेमेंट लेकर सॉफ्टवेयर में नए फंक्शन जोड़े जाते है!
वाटर फॉल(waterfall model) सॉफ्टवेयर बिल्डिंग तकनीक का इस्तेमाल बड़े तौर पर होता है | जबकि इस मॉडल में कुछ कमिया ड्रॉबैक्स और बेनिफिट है |
बेनिफिट ऑफ़ वॉटरफॉल मॉडल(Benefits of waterfall model):-
वाटर फॉल मॉडल(waterfall model) का क्रियान्वन करना बहुत सरल है |
वाटर फॉल मॉडल(waterfall model) छोटे सॉफ्टवेयर और सिस्टम बनाने के लिए उपर्युक्त है|
ड्रॉबैक्स ऑफ़ वाटर फॉल मॉडल(Drawbacks of waterfall model):-
सॉफ्टवेयर डेवलपमेंट प्रोसेस में(In waterfall model) ये प्रोग्राम बनाने का ये क्रमबध फ्लो बहुत ही कठिन है | क्योकि अगर हमें किसी भी फेज में कोई चेंज करना पड़ता है तो फिर बहुत कन्फूशन हो सकता है|
जानकारी को एकत्रित करना पहले फेज में होता है , पर कभी कभी यह पॉसिबल नहीं होता कि हमें सारी जानकारी सुरु में ही मिल जाये | इस कारन से प्रोजेक्ट में दिक्कत आ जाती है!
सॉफ्टवेयर का वर्किंग मॉडल और फाइनल मॉडल कस्टमर को सबसे लास्ट में देखने मिलता है| अगर इस स्टेज पे कस्टमर इस सॉफ्टवेयर से संतुस्ट नहीं होता है तब यह एक गंभीर समस्या हो जाती है|
वाटर फॉल मॉडल(Waterfall Model) का Linear नेचर होने के कारन इसमें बहुत सारी ब्लॉकिंग स्टेट होती है, क्योकि कुछ टास्क पहले वाली टास्क पर निर्भर हो सकती है | ऐसे में ये जरुरी हो जाता है कि हम ऐसे डिपेंडेंट टास्क को पहले एक्सेक्यूटे करे| कभी कभी यह लम्बे इंतज़ार का कारन बन सकता है|
इस वॉटरफॉल ब्लॉग(waterfall model) को लेकर आपके मन में कोई भी प्रश्न है तो आप हमें इस पते a5theorys@gmail.com पर ईमेल लिख सकते है|
आशा करता हूँ, कि आपने इस वॉटरफॉल मॉडल(waterfall model) पोस्ट को खूब एन्जॉय किया होगा|
आप स्वतंत्रता पूर्वक अपना बहुमूल्य फीडबैक और कमेंट यहाँ पर दे सकते है|
Hello Friends, In this blog post I am going to let you know to build an email verification functionality based on domain address inside your email CSV file. I make it more simple, suppose you have an email CSV file which has bulk email addresses and having multiple domain addresses for email.
Now the problem is that you have email addresses with domain extension say ABC.com, and you don’t want to keep any email address with this particular domain name and want to delete all of them,
so now the question is how would you delete them for email verification?
Though there could be some other way to remove as such domain from your excel file for email verification, in case if you don’t know the way or you not familiar with the more technical thing then you would need to have a tool which can do this work for you.
You can use this below-given a tool for email verification process where you just need to upload your list and select the domain which you want to remove or keep and if the domain you want to delete is not in the drop-down list then you can also manually add or delete the domain the below-given option.
*Note – Domain add and delete functionality is disabled in the live demo. If if you have any query related with live demo then please contact us here.
So using this tool email verification can happen both ways, you can remove the domain you want and you can also keep the domain you want, means you can select the emails with a specific domain name and also can delete the email with a specific name.
What is the process to make this email verification tool?
This is a very simple process to build this email verification tool, you just need to follow the below-given procedure.
1. Install all the applications to develop this functionality.
Software required to develop this functionality are :
NetBeans IDE Xampp Server
2. Now create a project name as excel_cleaner, though you can create with any name and then create the below-given file structure.
Once the project creation is done with all file and folder then just copy and paste the below-given code for email verification tool.
if($username==””) { echo”Please fill all the fields”; } else{
$query=mysql_query(“DELETE from domain where domainname = ‘$username'”); if($query){ echo (“<script LANGUAGE=’JavaScript’> window.alert(‘Your domain has been deleted successfully’); window.location.href=’http://localhost/excel_cleaner/index.php’; </script>”);
Many times you would have needed a tool to extract email address from the bulk text string in your CSV file so that you can use those email addresses for other purpose or for sending the email campaign to those email addresses.
You may often get these types of email file from many sources, for example, if you are using any plugin on your website or blog for collecting the email id then you can get the email id with other additional data like date, time, place in the form of a text string for all the emails present in the excel file. To extract the email address becomes the issue here so that we can use our email addresses efficiently in other stuff.
Sample CSV File
And when collect any email data in an excel file then it is also in the form bulk data grouped with all other information and mail content, So it is a tough task to extract email address from that data. And sometimes you purchase a third party email list then it can be chances that you get messy data or email with other additional information in one single column. You can see the sample CSV picture in the above image.
So if you have this type of CSV file with you then what is the solution to extract email address from CSV file?
You should not worry about this as it is very simple to extract email address from CSV file, you just need to follow a small procedure to rid out of this problem using. above given email extractor tool. As per this procedure, you must make sure your text string data in which email addresses are present should be set in the very first column of the CSV file.
*Note – Domain add and delete functionality is disabled in the live demo. If if you have any query related with the live demo then please contact us here.
Now you just need to upload your CSV file in the email extractor tool and then click submit and you will get your results on the screen which will show only the email addresses and you will also have an option to download the results in a CSV file with an only email address. See the image for result CSV below along with the export option. You can easily extract email address using this tool.
Result with the Export option
In the case of any queries, you can write to us at a5theorys@gmail.com we will get back to you ASAP.
Hope! you would have enjoyed this post to extract email address from CSV file.
Please feel free to give your important feedbacks in the comment section below.
Hello Friends, In this blog post I am going to discuss the goals of software engineering. While developing a software what and all parameter and benchmark should be in mind and what should be the basic features or objectives of software engineering? You can see the below image which can easily explain you the goals of software engineering.
User Satisfaction:
This is the first out of all goals of software engineering and as also the most important goal as all the stuff is for a customer or user so we should be very focused about user satisfaction while developing any software.
A few programmers do this as they start developing the software immediately without understanding the actual requirement of end-user and this result in the improper flow of software which user did not want in actual. So by doing this programmer loses his energy and user faith or user satisfaction and if programmer rebuilds it again then it is an overhead to him to build it again.
High reliability:
this is the second out of all the goals of software engineering. this one tells us that we can not have any scope to have any mistake or bugs in our final product which is going to release at user end. If it will have mistakes and bugs then it can affect our relationship with our customers and thus this can highly impact the selling of our software in the market and can create a high loss percentage.
As Microsoft has also some bugs in the earlier release of windows and users were facing lots of problems. So the software is to be released only if high reliability has been achieved and there is no chance of any bugs.
Low Maintenance Cost:
This is the third one out of all goals of software engineering. Maintenance is a process in which a small problem or bugs which have been detected while using the software at user end are addresses and get fixed easily. But it does not mean the restructuring of software from scratch or start.
I mean to say if there is any problem in software then you have to design it once again. This happens if the software has very poor quality and made without any testing and parameters.
Delivery on time:
This is the fourth goals of software engineering. The delivery time matters while you develop software for your client or customer. As this is not possible to tell the exact time to complete software but if the developing work is to be done in a systematic order by breaking the whole project in parts and with estimating time for each module. By doing this analysis a proposed deadline can be given for completing a project for a client.
Low Production Cost:
As per the low production goals of software engineering software which is cost-effective gets always the attention of users. And if the software is succeeded to match the user requirement there is a big chance of sale or profit in either way.
High Performance:
Software performance is generally measured by its speed and memory consumption so we should develop in such a way that it could be run in minimal memory space with high speed. This optimization of the software will make it useful for users and will have a high demand in the market.
Ease of reuse:
If you are building a small unit of big software then it is very necessary to then we should try to make it in such a way that it can be reused if it is needed in building the same software or in other software too. This will save memory, money, and efforts.
In the case of any queries, you can write to us at a5theorys@gmail.com we will get back to you ASAP.
Hope! you would have enjoyed this post about the goals of software engineering.
Please feel free to give your important feedbacks in the comment section below.
Hello Friends, In this blog, I am going to let you know about CSV email cleaner tool or software. Sometimes did you need to remove some specific email addresses from your email CSV? Make it more simple, say you have millions of emails with different domain extensions like most of them are gmail.com and yahoo.com and any other, etc.
What does this CSV email cleaner actually do? What is the procedure?
You can see the screenshot for the CSV email cleaner software below, here you can select a particular domain which you want to remove or select. Here in the demo of this software, we have included both the functionality for adding and removing the emails of a particular domain extension. In the below demo when you will select the gmail.com then it will remove all the emails with this gmail.com extension and when you will select yahoo.com then it will select all the emails with yahoo.com extension.
*Note – Domain add and delete functionality is disabled for the live demo.
And now you want to remove all the email having gmail.com domain extension from your email CSV, there could be many reasons behind this as you don’t want to send emails to this domain email or this is fake domain extension which you want to remove from your email CSV file. You can easily remove all emails with this particular domain extension using this CSV email cleaner tool.
Removal of gmail.com using CSV email cleaner
There may be another case where you have millions of email addresses in your email CSV file with different domain extension and now you just need to select a particular domain extension based emails say you just want to extract yahoo.com emails out of all the emails and export them in an email CSV file. So you can easily select them all with this CSV email cleaner tool.
Selection of all yahoo.com using CSV email cleaner
The format of the CSV file that you need to upload is given below while using CSV email cleaner. Remember only to upload file in CSV format.
Conclusion:
So this CSV email cleaner is an amazing tool which can filter all your email address based on a particular domain name. you can easily remove and select the emails based on domain extensions in your email CSV file.
In the case of any queries, you can write to us at a5theorys@gmail.com we will get back to you ASAP.
Hope! you would have enjoyed this post about CSV email cleaner.
Please feel free to give your important feedbacks in the comment section below.
Hello friends, In this, in this blog post I am going to let you know about one more interesting technique name as backtracking to solve the problem in the data structure. Which most of you would have read during your study period or engineering.
Backtracking is very helpful in solving the problems where we have a set of n number of solutions or in other words, ave multiple solutions for solving one particular problem and then we need to find out the optimal solution for solving that problem by satisfying some constraints too which are the part of this problem.
So ultimately under a fixed boundary or predefine constraints we need to find out the best or optimal solution for the particular problem out of all possible solution of that problem.
In many application of the backtracking method, the desired solution is expressible as an n-tuple(x1, x2, ………Xn), where Xi is chosen from some finite set of Si.
Generally, the problem to be solved calls for finding one vector tha maximizes or satisfies or minimizes a certain function P(x1, x2,…..xn). Sometimes it seeks all vectors that satisfy P.
Many of the problems we solve using backtracking require that all the solutions satisfy a complex set of constraints. these constraints are divided into two categories for any problem. They are listed below.
Explicit Constraints:
Explicit constraints are rules that restrict each Xi to take on values only from a given set
Some examples that are common for explicit constraints are
Xi>=0 or Si ={all non negative real numbers} Xi=0 or 1 or Si ={0, 1} Li<=Xi<=Ui or Si={a:Li<=a<=Ui}
The explicit constraints depend on the particular instance I of a problem being solved. All tuples that satisfy the explicit constraints define a possible solution space for I
Implicit Constraints:
Implicit constraints are rules that determine which of the tuple in the solution space of I satisfy the criterion function. Hence implicit constraints give the way in which the Xi must relate to each other.
An example that can be solved by the use of backtracking technique are listed below:
Sorting the array of integers in a {1:n}
8 -Queens problem
4- Queens problem
Sum of subsets problem.
In the case of any queries, you can write to us at a5theorys@gmail.com we will get back to you ASAP.
Hope! you would have enjoyed this post about backtracking technique.
Please feel free to give your important feedbacks in the comment section below.
Hello Friends, In this blog post I am going to let you know about very interesting facts about email marketing related with email sending quota that often happens almost with all the email marketing user once in their life.
Have you imagined that you purchase an ESP plan along with an SMTP plan and when you send your first email campaign then you see that your sent email has been stuck in between and stop sending further?
And then you make the inquiry for the same and then you got to know that you have a fixed sending limit say 200 emails/day or 500 emails/day until either you verify your email or domain. Or sometimes you need to manually send a request to increase your email sending limit whenever it is just for one time and later it is automatically increased on the basis of use and requirement.
for example: if you use amazon SES for sending your email then initially it keeps you in the sandbox mode where you can send only limited emails/day. But once you send the request for increasing your email sending limit then they increased your sending limit and later your sending limit automatically increased as per the use or requirement for your email sending.
Why should you be aware of the initial sending limit while doing the email marketing or sending your very first email campaign?
You must know your email sending limit as you got your first email campaign stuck in between so it also damages your email sending reputation which can affect your email delivery rate as well.
And you also lose your business for which you sent the email campaign and this will also affect the trust with your marketing partners. Suppose you sent an important email campaign for a dedicated and timed sale and it was stuck before sending and you got to know sometime later then you can not do anything in reverse to resent it again in the back time so ultimately the point is the time-dependent or time-based email campaign must be sent before checking this email sending limit.
Why this verification and request for email sending limit is necessary to do? any many ESP does not allow to send bulk emails, especially in the first or second shot of email campaign?
As in the starting age of email marketing, there were no limit or much verification for email or domain. But that time spamming was not in light much and there were very less spamming emails using this medium of ESP.
But last few years it has been observed that a major percentage of email marketing users are doing spamming by using these ESP or SMTP server. So to stop them or their activity now SMTP or ESP has revised their rules or policy along with account setup configuration.
Now ESP or SMTP makes sure that you must be authentic and authorize in terms of identity and business as well as most of the SMTP or ESP also checks your website content or website before activating your account for sending the emails.
So remember one thing don’t create your ESP account on the same day for sending the email campaign as it will not be a good practice to send the email campaign. First, prepare all the necessary requirements for the account and then make an account and wait until account activation is done and email sending limit increased if there is any limit.
Conclusion:
almost all the SMTP or ESP provider has been set an initial limit for email sending so that user can’t send bulk email without verifying the email domain and setting up the other necessary account configuration like webhook points. and once they are done with complete setup then they can easily shot their email campaign. But most of the new user does this mistake to fire an email campaign to a large email list and then got stuck with their email campaign. While doing this few strict SMTP can also suspend your account temporary. Then you have to do the further unnecessary process to reactivate it. so make sure to check the email sending limit before firing your email campaign.
In the case of any queries, you can write to us at a5theorys@gmail.com we will get back to you ASAP.
Hope! you would have enjoyed this post about email sending quota for email campaign.
Please feel free to give your important feedbacks in the comment section below.
Hello Friends, In this blog post I am going to let you know about the difference between transactional email and business email. If you are in the field of email marketing or doing some online work involving the email activity as a compulsory part of it, then you must know the difference between transactional email and marketing email or business email.
It is a great help to choose a right email plan using any ESP if it is clear that whether you want to send a transactional email or you want to send marketing email or business email which are usually send in bulk.
Sometimes it happens with the new email marketing user that they purchase a marketing plan to send the transactional email and vice versa is also true.
Transactional email is a single email which is usually sent for either confirmation of your email account or activation of your account on any website or portal. There are many ESP provider by which you can send the transaction email for activation, confirmation, and any other drip emails for step by step instruction.
you would have seen these emails definitely in your mailbox, while you would have ever registered in any website using a form or when you would have created an account on any website for using its service or product.
For example: when you register in any product or service-based website for using the product or service then you would have seen a message like “Your account activation link has been sent to your registered mail id Please click on the link to activate your account”
Emails on any banking transaction is another example for this transaction email, whenever we make any transaction using our bank card or internet banking then or we make any shopping using our bank card then we instantly get a message in our inbox regarding the detail of the transaction. so this type of emails come in the category of transactional email.
Marketing email or business email are those emails which are sent in bulk for promotion of product or service. There are many ESP providers who allow sending emails in bulk.
You would have also seen a lot of marketing emails from several websites especially from an e-commerce website in your inbox, which is also categorized as a promotional email in few mailboxes like Gmail.
This is also the reason that many websites which are not found good based on their content are not allowed to send marketing or business email by most of the ESP as this can create damage to the ESP reputation. But as such website can be allowed to send the transaction email as these are the single email sent to one at a time, and thus does not impact the reputation of ESP.
Conclusion:
You should know the clear difference between transactional email and business email as it really helps very much when you go to use any email service provider for shooting your emails. Transaction emails are fired when any transaction activity happens or any event occurs. they are the single email sent on at a time. whereas marketing emails are those emails which are sent in bulk for promoting our company product or service or to send any special notice to any persons.
Hello Friends, In this blog post I will discuss 3 most dangerous email marketing mistakes that you never must have while doing the email marketing using any email service provider. As we all know it is very hard to get a successful email campaign in term of final sale through email marketing.
Because even we do everything perfectly to send a nice email campaign still it is finally the customer mind which will decide whether to purchase our product or not. So it is very necessary not to make a blunder or email marketing mistakes at our end that can cause even shutdown to our ESP plan along with our sent email campaign and thus indirectly we lose our business and also important time.
And in a case, if we are working for a third party client then we can also lose their trust. So it becomes very important to run the email campaign in a very appropriate manner with all important rules and regulation without making serious email marketing mistakes.
There will many email marketing victim who has the worst experience with their chosen ESP while doing email marketing. As I have been here for more than two years in this field so as per my experience I can tell you many facts about email marketing users and their problems and email marketing mistakes.
As for example, there are lots of case when a user gets an SMTP suspension at the very first time and thus lost their scheduled email campaign too which was supposed to send. And if it was regarding the very next day offer or invitation then it was a big loss for you as a result of these email marketing mistakes.
And while doing the email marketing this could be the worst thing that can happen with you and at the extreme, the same ESP or SMTP provider will not allow to make you another account with the same details and domain credentials.
Why a user reaches up to this situation? What email marketing mistakes are responsible for this situation?
If we talk very general then this is a fact that 95% of email marketing users are not technology familiar, I mean to say they are just simply a business owner who wants to promote their business and want to sell their product or services.
So to use this email marketing they just simply purchase an ESP plan and make their account and verify their email address. It is fine till now as they would not have made any email marketing mistakes but after this point, there are several important small configurations which they must need to complete before sending any email campaign.
Even ESP company have proper documentation and their support team alert and up to date for setting up your account. But as I said the user is not from a technical background so they understand little and do the wrong configuration into their ESP account or does an email marketing mistakes. and the facts is this that they do not actually understand the impact of whatever they usually do. And ultimately, at last, they are slipped into serious trouble sometimes.
But most of the user starts sending an email campaign with half configured account or improper account and then after click on sending button they stuck into the problem by making such email marketing mistakes and then they write an email to support team.
But sometimes it becomes too late. As in the case if amazon SES account got suspended then it is very hard to reactivate the account. and will be an unnecessary time and money wastage for you.
There are various small email marketing mistakes in the whole email sending process but I am explaining the top 3 biggest email marketing mistakes which if you avoid then you can not enter into serious trouble which is not recoverable.
1. Domain Verification:
Domain Verification
This is the very first email marketing mistakes which can cause the suspension to your SMTP server as a result of high spam and bounce email rate. Most of the users forget to do the domain verification as they don’t understand this process. Usually, they just shot their email campaign just after the email verification process.
But they forget to make the domain verification at least for the first two-shot of an email campaign and in case if the user gets to cross the allowed benchmark of spam and bounce email then it is very high chance to get an email suspension.
So just avoid this email marketing mistakes just verify your domain by putting the SPF and DKIM record to your domain hosting site though you can also read the tutorial for the same as every ESP have their own tutorial to setup whole account you need to be careful to follow it step by step.
And if you are unable to do this then you can easily take the help of support team to set up your email account properly in a case if you not from a technical background and ability to make setup of your own account.
2. Third-Party email list or purchased email list:
Purchased Email List
The email marketing mistakes is not to choose or use a third-party email list, though the mistake is to forget the email cleaning process before sending an email campaign each time.
If a new business runner wants to grow his/her business then they obviously use the third party or purchased email list to send their email campaign. But the problem is generated when they do not clean their email list or shot their email list directly and got lots of spam and bounce percentage at the very first time and crossed the boundary of limit and get an SMTP suspension.
So you must always remember to clean your email list before sending the email campaign each time. you should also clean your own subscriber list too as sometimes it becomes too old or can have some temporary or disposable email address. We must keep on repeating such a procedure to avoid email marketing mistakes.
3. Web-hook for spam and bounce:
Webhook-Point
This is very important to configure as this can save us sometimes when the upper email marketing mistakes do not have a major impact. But if this webhook point will not be configured then we will definitely get a suspension in 4-5 email campaign sending as we will easily cross the spam and bounce email boundary. These are the hook point which helps to get the details of spam and bounce emails in our ESP GUI or dashboard from our SMTP server.
Usually, there is 3-5% of average spam and bounce emails allowed to send per email campaign. The rate depends on the nature of ESP, but we can consider a standard rate of 5%. If we will configure the webhook endpoint then we will be able to reduce the spam and bounce email in each email campaign sending as these emails will be blocked by the system and no email will be sent to these email addresses.
All the ESP have their own process to configure the webhook endpoint to get the detail of spam and bounce email. you just need to set the https endpoint to your SMTP account. I will suggest following the tutorial given by ESP for the same in order to avoid this email marketing mistakes.
Conclusion:
When email marketing is very beneficial in terms of earning the profit then we should do it with a serious mindset and proper procedure to avoid the blunder or serious email marketing mistakes. Email marketing is not limited to just to send the emails to some email list. However, is all about to send the email campaign with proper planning and account configuration to make it successful at the end and thus earn some profit in terms of sale. So just make sure you are done with full account configuration before shooting any email campaign.
In the case of any queries, you can write to us at a5theorys@gmail.com we will get back to you ASAP.
Hope! you would have enjoyed this post about the top 3 biggest email marketing mistakes.
Please feel free to give your important feedbacks in the comment section below.
