Exam 6: Relational Databases and SQL

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Which of the following is not a proper SQL command for creating database relations?

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A recursive relationship is created when there is an employee being supervised,and another employee is the supervisor.

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The notation 1:N is used to specify the relationship type of ______________________________.

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The SELECT statement has all but one of the following parts:

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A key attribute is the attribute whose value is:

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A(n)______________________________ of an entity is one specific thing of the type defined by the entity.

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Which of the following is the entity or agent?

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Queries of a database are driven by ______________________________ commands.

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The DELETE command is the method used to delete a tuple from a relation.

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A situation in which a particular supplier provides more than one type of inventory item to a firm and a particular type of inventory item is acquired from more than a single supplier is called a(n):

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Refer to Exhibit 6-1.Which of the following SQL statements would extract the client number and date for every instance that an employee worked less than 8 hours any particular day?

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The DELETE command is used when we want to change one or more attribute values.

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Which of the following is a valid SQL command?

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The fundamental requirement for moving toward an event-driven model is the complete integration of data related to an organization's business events.

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A(n)______________________________ relationship occurs between two different instances of an entity.

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______________________________ is a powerful database language that can be used to define database systems,query the database for information,generate reports from the database,and access databases from within programs using embedded commands.

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A(n)______________________________ a simplified representation of a complex entity or phenomenon.

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Queries of a database are driven by SELECT commands.

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The INSERT command is used to add a single tuple to an existing relation.

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The constraint that is specifies the degree of minimum participation of one entity in the relationship with the other entity is called:

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