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Interview Question :: Structured Query Language (SQL)


What are the principles of SQL?
The function and the purpose of data mining.
Answers to "Structured Query Language (SQL)"
RE: Structured Query Language (SQL)?

Maybe this link will be helpful:



http://www.sql-ex.ru/help/
 
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RE: Structured Query Language (SQL)?

SQL is a database-based language.

its not truely a PROGRAMMING language even... since there are no logic constructs/loops etc...

SQL contains commands for performing 4 main operations:::

1.Creating databases(C)

2. Retrieving databases(R)

3. Updating databases(U)

4. Deleting databases(D)

they are someimtes called "CRUD"

databases can be retrieved in many ways such as retrieving the whole database or only the selected parts of the database..

SQL has many variants such as mysql, ms-sql etc...
 
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