Based on three-level architecture, DBAs should ________. ( ) change the internal schema by redesigning conceptual schema ( ) inform users about the file organization in database ( ) alter the ER diagram if the unique constraint in a relation is changed ( ) change users’ view if one adds new attributes to a table
Based on three-level architecture, DBAs should ________. ( ) change the internal schema by redesigning conceptual schema ( ) inform users about the file organization in database ( ) alter the ER diagram if the unique constraint in a relation is changed ( ) change users’ view if one adds new attributes to a table
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter2: Data Models
Section: Chapter Questions
Problem 11P
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Based on three-level architecture, DBAs should ________.
( ) change the internal schema by redesigning conceptual schema
( ) inform users about the file organization in
( ) alter the ER diagram if the unique constraint in a relation is changed
( ) change users’ view if one adds new attributes to a table
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