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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 hierarchical model the relationship between records is expressed as _______.

  unique key for each record

  parent-child

  pointers or links

  Half-n-half Clue
 

2.

In the hierarchical database, the _______ can be located using the hashing function.

  child nodes

  primary key

  root

  None of these

  Half-n-half Clue
 

3.

The domain in the relational model is said to be atomic if the elements of the domain consist of _______ units.

  redundant

  distinct

  divisible

  indivisible

  Half-n-half Clue
 

4.

Which company has developed the hierarchical model?

  IBM

  Sun Microsystems

  Oracle

  Microsoft

  Half-n-half Clue
 

5.

Which data model organizes the data in the form of tables and relations?

  Hierarchical Model

  Network Model

  Relational Model

  Half-n-half Clue
 

6.

In Relational Model, rows are referred to as _______ and columns are referred to as _______.

  tuples, attributes

  connectors, nodes

  attributes, tuples

  nodes, connectors

  Half-n-half Clue
 

7.

In the Relational Model, each _______ contains values for the _______.

  tuple, attributes

  entity, domains

  relation, entities

  attribute, tuples

  Half-n-half Clue
 

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