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DBMS Training & SQL Tutorial : Data Models


Answer the following multiple-choice questions about data models used in Database Management.

Formats Info Page/Theory Quiz Review
Multiple choice

Your Performance  

1.

In the Relational Model, the number of columns in a table is termed as _______.

  cardinality

  degree

  domain

  None of these

  Half-n-half Clue
 

2.

For a database to be considered as full-fledged RDBMS, it has to comply with at least _______ out of the 12 Codd's rules.

  1

  6

  9

  10

  Half-n-half Clue
 

3.

What is the set of attributes that collectively identify an entity in an entity set known as?

  Super Key

  Foreign Key

  Unique Key

  None of these

  Half-n-half Clue
 

4.

What is the minimum subset of the super key that can be used to uniquely identify an entity in an entity set known as?

  Candidate Key

  Foreign Key

  Unique Key

  None of these

  Half-n-half Clue
 

5.

If a column or a set of columns of Table A correspond to a primary key of another Table B, then these set of columns in Table A are known as a _______ key.

  reference

  foreign

  primary

  Half-n-half Clue
 

6.

In the Network data model, relationship between records is implemented using _______.

  keys

  pointers

  parent-child relationship

  None of these

  Half-n-half Clue
 

7.

In the Relational Model, the number of rows in a table is termed as _______.

  cardinality

  degree

  domain

  None of these

  Half-n-half Clue
 


 
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