Exam 5: Data Manipulation and Transaction Control

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When data is being entered into a VARCHAR2 or CHAR column using the INSERT command, the data will be stored in ____.

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Which keyword permanently saves changed data in a table?

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A substitution variable can be identified by the ____________________ symbol that precedes the variable name.

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A table can be locked in  SHARE MODE \underline { \text { SHARE MODE } } or EXCLUSIVE MODE. _________________________

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Which of the following statements about the INSERT keyword is incorrect?

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A subquery can be used with the INSERT command to enter data from an existing table into the destination table.

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When non-numeric data is being added to a table, the data must be enclosed in ____________________ quotation marks.

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When inserting a row into a table, how can you indicate that a row contains a NULL value?

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The ____________________ command is used to add data to an existing row in a table.

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If data is only being added to some of the columns in a table, the names of the columns must be listed in the VALUES clause.

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Which command is used to prevent other users from making changes to a table?

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If no value is assigned to a column when a row is added to a table, the column will contain a NULL value.

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When Oracle11g encounters a substitution variable, the user will be prompted for the actual value to be assigned to the variable.

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The data being inserted into a table are listed in the ADD clause of the INSERT command.

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A  NULL\underline { \text { NULL} } value can be included in the data being added to a table by explicitly entering the word NULL. _________________________

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Commands used to modify data are known as DML commands.

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If a(n) ____________________ clause is not included in the UPDATE command, then all rows in the table will be changed.

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Which of the following is a valid statement?

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A COMMIT is  explicitly \underline { \text { explicitly } } issued when the user exits SQL*Plus. _________________________

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The ____________________ command is used to permanently update a table and allow other users to view the changed data.

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