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Chapter 19: Database Systems Exam Tests

Database Systems MCQs - Chapter 19

RDBMS Interview Questions and Answers Quiz Questions and Answers PDF - 3

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RDBMS Interview Questions and Answers Questions & Answers PDF Download: MCQ Quiz 3

MCQ 11: The query languages are terse and formal, but they illustrate the fundamental techniques for

A) Storing data to database
B) Extracting data from database
C) Updating data of database
D) Deleting data from database

MCQ 12: Operation that outputs pairs of rows from the two input relations that have the same value on all attributes that have the same name, is known as

A) Natural join
B) Union operation
C) Selection
D) Projection

MCQ 13: A set of operations in a query language that take one or two relations as input and produce a new relation as their result, is known to be

A) Relational calculus
B) Domain relational calculus
C) Relational algebra
D) Domain relational algebra

MCQ 14: A pictorial depiction of the schema of a database that shows the relations in the database, is known to be

A) Schema structure
B) Schema definition
C) Schema domain
D) Schema diagram

MCQ 15: Relational operations can be applied to the results of queries as well as to the

A) Given set of attributes
B) Given set of tuples
C) Given set of relations
D) Given set of domains

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Computer Fundamentals App (Android & iOS)

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Computer Architecture App (Android & iOS)