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DBMS Important Questions With Answers

DBMS – 21CS53 Important Questions With Answers Module 2 and 4 will be updated soon, Share with your friends which motivates us to work faster Module -1 1] Explain three schema architectures 2] Explain Data Independence 3] Characteristics of the…

Explain nested queries with examples

Explain correlated nested queries with examples Answer:- Some queries require fetching existing values from the database and then using them in a comparison condition. Such queries can be formulated using nested queries, which are complete SELECT-FROM-WHERE blocks within the WHERE…

Explain Assertions in DBMS

Explain Assertions in DBMS Answer:- Assertions are used to specify additional types of constraints beyond the built-in relational model constraints. In SQL, users can declare these constraints using the CREATE ASSERTION statement in the Data Definition Language (DDL). Each assertion…