MEDIUM
HSSC Clerk
IMPORTANT
Earn 100
In an ER model, _____ is described in the database by storing its data.
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Important Questions on Database Management System
HARD
HSSC Clerk
IMPORTANT
DCL stands for _____.
EASY
HSSC Clerk
IMPORTANT
Which one of the following statements is false?
MEDIUM
HSSC Clerk
IMPORTANT
State true or false.
(i) Select operator is not a unary operator.
(ii) Project operator chooses a subset of attributes or columns of a relation.
(iii) Select operator is a binary operator.
EASY
HSSC Clerk
IMPORTANT
Centralizing the integrity checking directly under the DBMS _____ Duplication and ensures the consistency and validity of the database.
EASY
HSSC Clerk
IMPORTANT
_____ database is used as a template for all databases.
EASY
HSSC Clerk
IMPORTANT
Choose the correct statement:
MEDIUM
HSSC Clerk
IMPORTANT
Relations produced from an E-R model will always be in _____.
MEDIUM
HSSC Clerk
IMPORTANT
E-R modelling technique is a ______.
