John works as a database designer in ABC Tech. He wants to produce a description of a database
implemented on secondary storage media. Which of the following designs will he implement to accomplishthe
task?

A.
Logical database design

B.
Conceptual database design

C.
Database design

D.
Physical database design

Explanation:
Physical database design is the process of producing a description of the database implementation on
secondary storage. It describes base
relations, file organizations, and indexes used to achieve efficient access to data. It also describesany
associated integrity constraints and
security measures, tailored to a specific DBMS system. This involves the actual programming of the database,
taking into account the features
and limitations of the DBMS and the client.
Answer A is incorrect. Logical database design is the process of creating a data model of an enterprise based
on a specific data model,
but independent of a particular DBMS. In the logical database design stage, users can define tables and
relationships that reflect the
conceptual design.
Answer C is incorrect. Database design is the process of creating a design for a database that will support the
enterprise’s operations
and objectives for the required database system. Itrepresents data and relationships between data required by
all major application areas
and user groups.
Answer B is incorrect. Conceptual database design is the process of constructing a model for the data at a high
level of abstraction
without using DBMS. It consists of the constructionof an Entity-Relationship schema, providing an optimal
description of the user
requirements.