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Database Architecture & Modeling - Database Management System Objective Questions and Answers

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database management system objective questions with answers

Questions

41 The data dictionary tells the DBMS :

A What files are in the database

B What attributes are possessed by the data

C What these files contain

D All of the above

View Answer Comment

Answer: Option [D]

42 An association between students and courses is :

A 1:1 relationship

B 1:M relationship

C M:M relationship

D None of these

View Answer Comment

Answer: Option [C]

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43 The database environment has all of the following components except :

A users

B separate files

C database

D database administrator

View Answer Comment

Answer: Option [B]

44 The key to a cost-effective data input operation is :

A OCR equipment

B validity checks

C validation

D employee motivation

View Answer Comment

Answer: Option [D]

45 Complex entities can be constructed using the following operation :

A SUM

B Union

C Aggregation

D Collection

View Answer Comment

Answer: Option [C]

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