Managing Databases with Oracle - General Questions (2)

9.

What Oracle backup and recover file contains user and system data?

A.	Control file
B.	Datafile
C.	OnLine ReDo file
D.	Offline ReDo file

Answer: Option B

Explanation:

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10.

Of the three ways to create an Oracle database, which one is the easiest and most recommended?

A.	Using the Oracle Database Configuration Assistant.
B.	Using the Oracle-supplied database creation procedures.
C.	Using the SQL CREATE DATABASE command.
D.	None of the above is correct.

Answer: Option A

Explanation:

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11.

vWhich of the following is not true about modifying table columns?

A.	You can drop a column at any time.
B.	You can add a column at any time as long as it is a NULL column.
C.	You can increase the number of characters in character columns or the number of digits in numeric columns
D.	You cannot increase or decrease the number of decimal places.

Answer: Option D

Explanation:

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12.

After a table has been created, its structure can be modified using the SQL command:

A.	UPDATE TABLE [TableName].
B.	MODIFY TABLE [TableName].
C.	ALTER TABLE [TableName].
D.	CHANGE TABLE [TableName].

Answer: Option C

Explanation:

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13.

Which of the following is NOT an Oracle-supported trigger?

A.	BEFORE
B.	DURING
C.	AFTER
D.	INSTEAD OF

Answer: Option B

Explanation:

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14.

vSQL*Plus will finish the statement and execute it when the user types in this:

A.	A left slash ( \ ) followed by [Enter].
B.	A colon ( : ) followed by [Enter].
C.	A semicolon ( ; ) followed by [Enter].
D.	A period ( . ) followed by [Enter].

Answer: Option C

Explanation:

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15.

Which of the following is not true of SQL views?

A.	Oracle views cannot use the ORDER BY clause in view definitions.
B.	Oracle views are created using the standard SQL-92 CREATE VIEW command.
C.	Oracle views can by queried.
D.	The SQL-92 standard does not allow the use of the ORDER BY clause in view definitions.

Answer: Option A

Explanation:

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16.

Which of the following is not true about indexes?

A.	Indexes are created to enforce uniqueness on columns.
B.	Indexes are created to enable fast retrieval by column values.
C.	Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes.
D.	Indexes are created with the ALTER TABLE command.

Answer: Option D

Explanation:

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