Database Systems Competitive Exam MCQs – Mock Test 35

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Download "Database Views Notes" App (iOS & Android): A view is updatable, if the Select clause does not have any; MCQ with answers: aggregates, expressions, and distinct specification. Study SQL Concepts and Queries Questions and Answers, Apple Book to download free chapter to advance SQL training.

Database Views MCQs – Mock Test 35 PDF Download

MCQ 171: A view is updatable, if the Select clause does not have any:

Expressions
Aggregates
Distinct specification
All of the Above

MCQ 172: SQL provides a way of renaming the attributes of a result relation, taking the form:

old-name to new-name
old-name as new-name
ALTER old-name to new-name
ALTER old-name at new-name

MCQ 173: The schema for relation r, with 'R' denoting the set of attributes, can be expressed by the notation:

r
R
r(R)
R (r)

MCQ 174: The pass that determines which transactions to undo is known as:

Redo pass
Analysis pass
Undo pass
Logical pass

MCQ 175: The Data model that is widely used in the database design is:

Object-based Data model
Relational Model
Semi-structured data model
Entity relationship model

Database Systems Notes App & eBook – Database Views Competitive Exam

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