Exam 3: Data Modeling

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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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The terms "parent record," "child record," and "sibling record" describe the records in a:

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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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The data item which uniquely identifies a computer record in an AIS database table is called the:

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An example of a "one-to-many" relationship is "students to classes."

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

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All of the following are items within the data hierarchy except:

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A Social Insurance Number SIN)is a good example of a useful primary record key.

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The idea behind concurrency control is to deny several users access to the same database record at the same time.

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Within a database context, the relationship between "grandparent" and "grandchild" would most likely be:

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

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Within a database context, the relationship between "sales invoice" and "line item" would most likely be:

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The smallest unit of information in the data hierarchy is a data field.

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All of these are types of record keys except:

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

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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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For a file of employee workers, it would make more sense to use their last name as a primary key rather than their Social Insurance Number because this would better preserve their privacy.

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Normalizing accounting data refers primarily to eliminating errors and outliers, thus creating "normal data."

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

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Databases cannot store more than one value in the same data field of the same record.

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