Database Systems Practice Test 239

Notations for Modeling Data Quiz PDF: Questions and Answers - 239

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Notations for Modeling Data Questions and Answers PDF Download: Quiz 239

MCQ 1191: Entity-relationship diagrams models the data representation component of a

A) Software system

B) Hardware system

C) Hardware + Software systems

D) Customized systems

MCQ 1192: The input must be a collection of numbers for the aggregate function

A) Avg

B) Sum

C) Both A and B

D) Min/Max

MCQ 1193: Data dictionary is also known as

A) Function catalog

B) Data catalog

C) Storage catalog

D) System catalog

MCQ 1194: After the transaction is committed, a new transaction is automatically started in the process of

A) Commit work

B) Transmit work

C) Trace work

D) Rollback work

MCQ 1195: The schema is developed at the phase

A) Data gathering

B) Requirement gathering

C) Conceptual design

D) Contextual design

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