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Exam 1: The Database Environment and Development Process

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Question 41

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Each member of a workgroup accesses data located on a database server.

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Question 42

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Data that describe the properties of other data are:

A) relationships.
B) logical.
C) physical.
D) metadata.

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Question 43

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E. F. Codd developed the relational data model during the 1970s.

A physical schema contains the specifications for how data from a conceptual schema are stored in a computer's secondary memory.

A user view is how the user sees the data when it is produced.

A data warehouse derives its data from:

Metadata are data that describe the properties of other data.

Redundancy increases the risk of inconsistent data.

The term legacy system refers to a newly installed database management system.

Many of the disadvantages of file processing systems can also be limitations of databases.

The need for consensus on data definitions is an example of which type of risk in the database environment?

The SDLC phase in which every data attribute is defined, every category of data is listed and every business relationship between data entities is defined is called the ________ phase.

A workgroup database is stored on a central device called a:

A constraint is a rule in a database system that can be violated by users.

The three-schema approach includes which of the following schemas?

Personal databases are designed to support a small group of individuals working together on a project.

Which of the following is NOT an advantage of database systems?

All projects move from the planning-enterprise modeling step to the planning-conceptual data modeling step of the systems development life cycle.

________ is the most popular RDMS data model notation.

The most common source of database failures in organizations is: