Database Systems: Design, Implementation, Management, Loose-leaf Version
Database Systems: Design, Implementation, Management, Loose-leaf Version
12th Edition
ISBN: 9781305866799
Author: Coronel, Carlos; Morris, Steven
Publisher: Course Technology
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Chapter 2, Problem 21RQ

Explanation of Solution

Relational model:

The process of organizing data into collection of two-dimensional tables is called as Relational model.

  • In a relational database model, the data items and their relationships are linked together in the form of tables.
  • Each row represents one entity instance and each column represents one attribute of the entity.
  • The values stored in the columns are of the same data type.

Key-value model:

  • In key-value model, each row represents one attribute of one entity instance.
  • The “key” column could represent any entity’s attribute.
  • The values in the “value” column could be of any data type and hence it is assigned as a long string data type...

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