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Database Systems Certification Exam Tests

Database Systems Practice Test 120

View of Data MCQ Questions and Answers PDF - 120

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View of Data MCQ with Answers PDF Download: Quiz 120

MCQ 596: The abstraction level that describes complex low-level data structures in detail, is

A) Physical level
B) View level
C) Virtual level
D) Logical level

MCQ 597: The third level of abstraction, that simplifies the user interaction to the system is

A) Virtual level
B) Physical level
C) Logical level
D) View level

MCQ 598: An index on an attribute of a relation is a data structure that allows database system to find tuples in relation that have specified value for attribute

A) Efficiently
B) Inefficiently
C) Costly
D) Optimized

MCQ 599: The expression r -s represents a

A) Arity
B) Unity
C) Projection
D) Set-difference

MCQ 600: Declarative DMLS requires a user to specify what data are needed and

A) Specifying how to get data
B) Provides data model
C) Provides Schema
D) Not specifying to get data

Database Systems Exam Prep Tests

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Database Management System App (Android & iOS)

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Computer Architecture App (Android & iOS)