Exam 5: Database Management Systems

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Systems that decouple data from system applications are often referred to as having ______________________________ architecture.

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

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In developing a data model,the term ______________________________ describes an association between entities.

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

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A resource,event,or agent about which data are collected is called:

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An extra character added to a numeric code as a device to test the accuracy of data entered into a computer system is called a:

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A database management system (DBMS)is a set of standalone programs designed to complicate the tasks of creating,accessing,and managing data.

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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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______________________________ 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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Another name for sequential coding is block coding.

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Which of the following statements is true of a hierarchical DBMS?

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A(n)______________________________ is a set of integrated programs designed to simplify the tasks of creating,accessing,and managing a database.

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A(n)______________________________ language is used to access a database and to produce inquiry reports.

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A relation is in second normal form (2NF)if it is in first normal form (1NF)and:

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A(n)______________________________ database model allows both simple and complex objects,including video clips and pictures,to be stored.

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Transform the relation in Figure TB 5.3 to second normal form (2NF).Label each new relation with a name that describes the attributes. Transform the relation in Figure TB 5.3 to second normal form (2NF).Label each new relation with a name that describes the attributes.

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

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A relation that is in ____ form contains repeating attributes within each row or record.

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A(n)______________________________ is mainly about collecting and presenting information and less about doing additional processing and calculations.

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____ databases include abstract data types that allow users to define characteristics of the data to be stored when developing an application.

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