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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. Examine the description of the STUDENTS table:

Which two aggregate functions are valid on the START_DATE column? (Choose two)

A) AVG (start_date)
B) MIN (start_date)
C) MAXIMUM (start_date)
D) AVG (start_date, end_date)
E) COUNT (start_date)
F) SUM (start_date)

2. What is true about sequences?

A) Once created, a sequence belongs to a specific schema.
B) Once created, a sequence is linked to a specific table.
C) Once created, a sequence is automatically used in all INSERT and UPDATE statements.
D) Only the DBA can control which sequence is used by a certain table.
E) Once created, a sequence is automatically available to all users.

3. Examine the structure of the EMPLOYEES table:

You need to create an index called NAME_IDX on the first name and last name fields of the EMPLOYEES table. Which SQL statement would you use to perform this task?

A) CREATE INDEX NAME_IDX (first_name, last_name);
B) CREATE INDEX NAME_IDX
FOR employees(first_name, last_name);
C) CREATE INDEX NAME_IDX
ON employees(first_name, last_name);
D) CREATE INDEX NAME_IDX
ON employees (first_name AND last_name);
E) CREATE INDEX NAME_IDX (first_name AND last_name);
F) CREATE INDEX NAME_IDX
ON (first_name, last_name);

4. Which data dictionary table should you query to view the object privileges granted to the user on specific columns?

A) USER_COL_PRIVS_MADE
B) USER_COL_PRIVS
C) USER_TAB_PRIVS_MADE
D) USER_TAB_PRIVS

5. A SELECT statement can be used to perform these three functions:
1.Choose rows from a table.
2.Choose columns from a table
3.Bring together data that is stored in different tables by creating a link between them.
Which set of keywords describes these capabilities?

A) selection, intersection, join
B) selection, projection, join
C) difference, projection, product
D) intersection, projection, join
E) difference, projection, join

Solutions: