Exam 13: Designing Databases

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Transaction files contain information necessary to produce reports but are not able to update master files.

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An insert anomaly results when a change to one attribute value either causes the database to contain inconsistent data or causes multiple records to need changing.

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Within the realm of metadata, there are record definitions and data item definitions.

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What can be constructed by choosing two or more data items and combining them?

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An object identifier is a unique key for each record in the database, not just in a table.

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A many-to-many relationship may be implemented using three tables.

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What is business intelligence?

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An attribute is some characteristic of a(n)________.

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Which file is used when it is necessary to run a program, but no printer is available?

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A ________ is a central source of data meant to be shared by many users for a variety of applications.

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A data warehouse is used to organize information for quick and effective queries.

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A well-designed ________ can be more flexible than separate files.

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A ________ represents more than one of the other entity.

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Each master file should have programs to:

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An update anomaly occurs when the entire primary key is not known and the database cannot insert a new record.

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Each distinct data entity may be stored on several master database tables.

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Within the realm of ________, there are entities and attributes.

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List and describe the four anomalies that may occur when creating database tables.

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An object identifier (OID)is a unique key for each record in the database, not just in a table.

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The information that describes data is referred to as ________.

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