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Exam 2: Data Models

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Question 41

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Each row in the relational table is known as an entity instance or entity occurrence in the ER model.

A) True
B) False

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Question 42

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Which of the following is true of business rules?

A) They allow the designer to set company policies with regard to data.
 
B) They allow the designer to develop business processes.
C) They can serve as a communication tool between the users and designers.
 
D) They provide a framework for the company's self-actualization.

E) None of the above
F) B) and C)

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Question 43

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In an SQL-based relational database, each table is dependent on every other table.

A(n) _____ is anything about which data are to be collected and stored.

A(n) _____ is a brief, precise, and unambiguous description of a policy, procedure, or principle within a specific organization.

What are the sources of business rules, and what is the database designer's role with regard to business rules?

Within the database environment, a data model represents data structures with the purpose of supporting a specific problem domain.

Database designers determine the data and information that yield the required understanding of the entire business.

An internal _____ refers to a specific representation of an internal model, using the database constructs supported by the chosen database.

A(n) _____ is the conceptual organization of an entire database as viewed by a database administrator.

Business rules apply to businesses and government groups, but not to other types of organizations such as religious groups or research laboratories.

Each column in a relation represents a(n) _____.

Describe the three parts involved in any SQL-based relational database application.

The object-oriented data model was developed in the _____.

Which of the following is true of NoSQL databases?