Which operator is used in SQL to compare a value to a set of values returned by a subquery? MCQ with Answer and Explanation

Explanation:
A view is a virtual table that does not store data physically; it presents data from one or more tables as if it were a table.

Explanation:
The Internal (or Physical) level of the three-schema architecture describes the physical storage structure and access paths of the database.

Explanation:
Physical Data Independence is the ability to modify the physical schema (like storage devices or file structures) without changing the conceptual or external schemas.