Exam 3: Data Modeling

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An example of a transitive relationship in a medical application is the one between "doctor number" and "patient name."

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A Social Security number is a good example of a useful primary record key.

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An important data field found in a typical computer record of an inventory file that would be vital to purchasing agents would be the inventory item's:

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The "concurrency" control in database operations refers to the need to convert foreign currency amounts into dollar terms before reporting them to subschema viewers.

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An example of a database cardinality is "one-to-many."

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An accounting information system database is a collection of facts and figures that serves the accounting information needs of one or more organizational subsystems.

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The largest unit of information in an accounting information database is a data field.

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Database security is no longer important because DBMSs are already so safe.

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Ander and Company has designed an electronic data processing system utilizing the database systems concept.In this system,transactions are entered into the system only once.In order to accomplish this Ander's files:

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The letter "M" in the acronym DBMS stands for "maintenance."

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An example of a database cardinality is "one-to-few."

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In the REA framework,a database designer should create a ____ for each entity.

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From the following choices,the best example of a primary key for an employee table would be his or her:

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In the REA accounting framework,the letter "R" stands for:

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Which of these would be an example of an "agent" in the REA framework?

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The foreign key in one database table will always be a _______ key in a linked table.

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In recent years many businesses have formed a common information source within their business organization called a database.One of the advantages of building databases is the simultaneous updating of files with common data elements.Another major advantage of the database concept is that:

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A database is in third normal form if all of its records are in second normal form,and there are no transitive dependencies.

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Controls that do not allow users to update the same database record at the same time are examples of:

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In the E-R model,the primary record key of a file is indicated by:

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