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I want to learn Relational Algebra and calculus in SQL? Can anybody ping me on my comment section for teaching me?
10 Antworten
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well. Question 1: in which DBMS do you want to conduct this training. This choice affects the applied Sql standard, language constructs, and possibly the database engine.
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Okay. Then let's build some database model, on which we will study all situations. Are you familiar with the Create Table, Create Index commands?
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Maybe this will help you: https://en.m.wikipedia.org/wiki/Relational_algebra
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yes here well done agree.
Very handy for exploring this issue.
I can help you deal with a specific example of a complex JOIN or CTE multi-level query, and for the theoretical part of the question and basic examples - everything is in these articles (answer from Brian , answer from me).
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I can try to help you ... but I don't have much time to teach you Sql. Come on like this: you probably already got acquainted with the basics on this topic, and there are probably questions that you do not completely understand. Just ask these questions and I will answer them if I can.
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The diagram in this article makes a handy shortcut to translating relational algebra into SQL statements.
https://www.codeproject.com/Articles/33052/Visual-Representation-of-SQL-Joins
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I know the basics of SQL but I don't know relational algebra and calculus to frame queries. This is my only problem. I searched Google to find pratice questions with answers but they are vain. If you give me some pratice questions, it will easy for me to frame query.
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Sorry sir, if you don't bother, I asked QUERIES practice questions sir...I'm not in expert level. But I want to learn from basic level. Sorry sir for my interruption. This is my obligation
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Ya, I know creating tables
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Thank you sir, I refer it