Database Systems Chapter 2

A data model is usually graphical.

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• False

An implementation-ready data model needn't necessarily contain enforceable rules to guarantee the integrity of the data.

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• False

An implementation-ready data model should contain a description of the data structure that will store the end-user data.

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• False

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

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• False

Even when a good database blueprint is available, an applications programmer's view of the data should match that of the manager and the end user.

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• False

In the context of data models, an entity is a person, place, thing, or event about which data will be collected and stored.

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• False

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

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• False

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

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• False

Business rules must be rendered in writing.

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• False

A disadvantage of the relational database management system (RDBMS) is its inability to hide the complexities of the relational model from the user.

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• False