Database Systems MCQs – Certification Test 888

Nested Subqueries Quiz (Question 888) – App & e-Book Download

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MCQ 888: SQL allows subqueries wherever an expression returning a value is permitted, provided the subquery returns:

Single attribute
One tuple
Single value
Both A and B

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Nested Subqueries Quiz App & e-Book – Database Systems Textbook Tests

Database Views Test 899

Transaction Model Test 900

SQL Data Definition Test 901

Database Authorization Test 902

Buffer Management Test 903

Accessing SQL and Programming Language Test 904

Concurrency Control in DBMS Test 905

Decomposition using Functional Dependencies Test 906

Entity Relationship Diagrams Test 907

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