單項選擇題

What does the Character Set Scanner command line utility do？（）

A.Reports only on any Unicode character conversions required.
B.Performs character set conversions to the new specified character set.
C.Scans on any character set conversion required， then converts the data.
D.Checks for any character definitions that will fail conversion to the new character set.

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多項選擇題

Oracle9i provides a database package called dbms_redefinition to perform an online rebuild of a table.
Which two steps are you recommended to do prior to issuing thedbms_redefinition_start_redef table procedure call？（）

A.Grand privileges on the interim table.
B.Invoke the dbms_redefinition.can_redef_table procedure.
C.Invoke the dbms_redefinition.sync_interim_table procedure.
D.Create any triggers， indexes， or constraints on the interim table.
E.Create an empty interim table with all the desired characteristics.

單項選擇題

You are responsible for a data warehouse application that uses records from an external table to update one of the dimension tables periodically. The records in the external table may contain data for new rows in the dimension table， or for updates to its existing rows. Which type of SQL command would you use to transfer the data from the external table to the dimension table as efficiently as possible？（）

A.MERGE
B.SELECT …CROSS JOIN
C.INSERT ALL …SELECT
D.CREATE VIEW …CONSTRAINT

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What does the Character Set Scanner command line utility do？（）

你可能感興趣的試題

Oracle9i provides a database package called dbms_redefinition to perform an online rebuild of a table. Which two steps are you recommended to do prior to issuing thedbms_redefinition_start_redef table procedure call？（）

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What does the Character Set Scanner command line utility do？（）

Oracle9i provides a database package called dbms_redefinition to perform an online rebuild of a table.
Which two steps are you recommended to do prior to issuing thedbms_redefinition_start_redef table procedure call？（）