Which of the following statements concerning entity-relationship modeling is true?
A) It has a strong theoretical base but seldom is used in practice.
B) It is a method for arranging data elements after the decision has been made to implement a relational database management system.
C) It involves identifying and documenting the system outputs and the contents of the outputs that are required by users.
D) The entity-relationship diagram depicting the model is read from top to bottom and cannot be read from bottom to top.

Question

Quizplus · Accepted Answer

Entity-relationship modeling is a method for designing and representing a database schema before implementing it in a relational database management system. It helps to identify entities, their attributes, and relationships among them. Option A is incorrect as it is widely used in practice. Option C describes the process of requirements gathering and is not specific to entity-relationship modeling. Option D is incorrect as the diagram can be read in any direction.

Which of the Following Statements Concerning Entity-Relationship Modeling Is True