Exam 5: Database Management Systems

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Because it uses alphabetic characters, a sequential coding system is most understandable to human beings.

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A relation is in ______________________________ if it does not contain repeating groups.

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The uniform product codes (UPCs) used by supermarkets and other retailers are examples of a block coding scheme.

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The centralized database approach to business event processing, in which facts about events are stored in relational database tables instead of separate files, solves many of the problems caused by data redundancy.

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If attribute A determines a single value for attribute B at any time, we say that attribute B is ____.

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In a(n) ______________________________ database model, records are organized in a pyramid structure.

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The way a user thinks of the data in a database is called the user's:

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The uniform product codes (UPC) used in supermarkets is a type of:

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The coding system that is most understandable by human information processors is:

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Which of the following statements regarding the centralized database approach to data management is false?

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A meaningful change in the state of an enterprise such as hiring employees, purchasing inventory, and collecting cash from customers are called ______________________________.

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The mapping of the relationships between entities would be used in the development of a(n):

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The computer software needed to implement a database approach to data management that is not needed with the applications approach to data management is:

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______________________________ coding schemes attach specific meaning to particular character positions by ordering items in descending order where each successive rank order is a subset of the rank above it.

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An attribute is an item of data that characterizes an entity or relationship.

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A record layout depicts:

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A(n) ______________________________ table contains repeating attributes (or fields) within each row (or record).

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______________________________ are problems in a relation table caused by the existence of functional dependencies.

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The ______________________________ approach to business event processing concentrates on the process being performed, with data playing a secondary or supportive role to the programs.

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The ____ database model works well for simple data structures, but falls apart quickly when the data becomes more complex.

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