Exam 6: Additional Database Objects

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If a column contains a large number of NULL values, a(n) ____________________ can quickly help determine the rows that contain NULL values and those that do not.

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index

When a positive value is assigned to the INCREMENT BY clause of the CREATE SEQUENCE command, numeric values are generated in descending order.

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False

The highest possible value for a sequence can be specified through the MAXVALUE clause.

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The default beginning value for a sequence is  one. \underline { \text { one. } } _________________________

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A(n)  index \underline { \text { index } } can be used to generate a series of unique numbers. _________________________

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A(n) ____ synonym is used by an individual to reference objects owned by that person.

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If the minimum value for a sequence is not specified, then NOMINVALUE will be assumed as the default.

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A database index allows users and application programs to quickly locate specific records.

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The ____________________ SEQUENCE command can be used to permanently delete a sequence from a database.

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 Indexes \underline { \text { Indexes } } are usually created for frequently referenced or searched columns. _________________________

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Even if you created a PUBLIC synonym, you must have ____________________ privileges to delete a PUBLIC synonym.

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When a negative value is assigned to the INCREMENT BY clause of the CREATE SEQUENCE command, numeric values are generated in descending order.

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Which of the following can be used to remove an index that currently exists on the column of a database table?

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A(n) ____ synonym is used by others to access an individual's database objects.

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A(n) ____________________ can be used for internal control purposes by generating a series of numbers.

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The ____________________ clause is used to indicate the interval that must exist between two values generated in a sequence.

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If a sequence is set to pre-generate sequential values, ____ values will be generated at one time by default.

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The ____________________ index structure can be particularly beneficial in queries involving compound conditions (AND and OR operator usage).

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A column has low cardinality if it contains many distinct values.

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The ____________________ SYNONYM command is used to permanently remove a synonym from a database.

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