Data Model

A relation is a two-dimensional table.
True
False
Which of the following is TRUE of business rules?
They allow the designer to set company policies with regard to data.
They allow the designer to develop business processes.
They can serve as a communication tool between the users and designers.
They provide a framework for the company’s self-actualization.
The ____________________ database is a collection of records that is logically organized to conform with the upside-down tree.
Hierarchical
Network
Relational
Entity relationship
A disadvantage of the relational database management system (RDBMS) is its inability to hide the complexities of the relational model from the user.
True
False
Structural dependence occurs when access to the file is dependent on its structure.
True
False
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