+ 1

I want to learn Relational Algebra and calculus in SQL? Can anybody ping me on my comment section for teaching me?

26th Sep 2020, 2:18 PM
E.Abinaya
E.Abinaya - avatar
10 odpowiedzi
+ 6
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.
26th Sep 2020, 2:49 PM
Michail Getmanskiy
Michail Getmanskiy - avatar
+ 6
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?
26th Sep 2020, 3:02 PM
Michail Getmanskiy
Michail Getmanskiy - avatar
26th Sep 2020, 3:09 PM
Michail Getmanskiy
Michail Getmanskiy - avatar
+ 6
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).
26th Sep 2020, 4:59 PM
Michail Getmanskiy
Michail Getmanskiy - avatar
+ 5
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.
26th Sep 2020, 2:37 PM
Michail Getmanskiy
Michail Getmanskiy - avatar
+ 3
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
26th Sep 2020, 4:52 PM
Brian
Brian - avatar
+ 1
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.
26th Sep 2020, 2:42 PM
E.Abinaya
E.Abinaya - avatar
+ 1
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
26th Sep 2020, 2:53 PM
E.Abinaya
E.Abinaya - avatar
+ 1
Ya, I know creating tables
26th Sep 2020, 3:29 PM
E.Abinaya
E.Abinaya - avatar
+ 1
Thank you sir, I refer it
26th Sep 2020, 3:29 PM
E.Abinaya
E.Abinaya - avatar