Question

The _________ layer provides the interface between the business logic layer and the underlying database

(a) Business-logic layer

(b) Data access layer

(c) Data transfer layer

(d) Business manager layer

This question was addressed to me in a national level competition.

This key question is from Application Architectures topic in section Application Design and Development of RDBMS

Answer 1

Right answer is (b) Data access layer

The best explanation: The data-access layer provides the interface between the business logic layer and the underlying database. The data access layer provides the mapping from the object oriented data model to the relational model.