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

  connectors, nodes

  tuples, attributes

  attributes, tuples

  nodes, connectors

  Half-n-half Clue
 

2.

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
 

3.

In the hierarchical model the relationship between records is expressed as _______.

  pointers or links

  unique key for each record

  parent-child

  Half-n-half Clue
 

4.

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

  child nodes

  primary key

  root

  None of these

  Half-n-half Clue
 

5.

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

  cardinality

  degree

  domain

  None of these

  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.

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
 


 
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