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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. What does the FORCE option for creating a view do?

A) creates a view regardless of whether or not the base tables exist
B) creates a view even if the underlying parent table has constraints
C) creates a view with constraints
D) creates a view in another schema even if you don't have privileges

2. Which four are types of functions available in SQL? (Choose 4)

A) integer
B) string
C) conversion
D) translation
E) date
F) numeric
G) calendar
H) character

3. In which four clauses can a subquery be used? (Choose four.)

A) in the SET clause of an UPDATE statement
B) in the GROUP BY clause of a SELECT statement
C) in the INTO clause of an INSERT statement
D) in the WHERE clause of a SELECT statement
E) in the VALUES clause of an INSERT statement
F) in the FROM clause of a SELECT statement

4. Which two statements about creating constraints are true? (Choose two)

A) Constraints can be created after the table is created.
B) Constraint names must start with SYS_C.
C) Information about constraints is found in the VIEW_CONSTRAINTS dictionary view.
D) Constraints can be created at the same time the table is created.
E) All constraints must be defines at the column level.

5. Examine the structure of the EMPLOYEES table:

What is the correct syntax for an inline view?

A) SELECT a.last_name, a.salary, a.department_id
FROM employees a
WHERE a.salary =
(SELECT max(salary)
FROM employees b
WHERE a.department_id = b.department_id);
B) SELECT a.last name, a.salary, a.department_id FROM employees a WHERE a.department_id IN (SELECT department_id FROM employees b GROUP BY department_id having salary = (SELECT max(salary) from employees))
C) SELECT a.last_name, a.salary, a.department_id
FROM employees a
WHERE (a.department_id, a.salary) IN
(SELECT department_id, a.salary) IN
(SELECT department_id max(salary)
FROM employees b
GROUP BY department_id
ORDER BY department_id);
D) SELECT a.last_name, a.salary, a.department_id,
E) maxsal FROM employees a, (SELECT department_id, max(salary)maxsal FROM employees GROUP BY department_id) b WHERE a.department_id = b.department_id AND a.salary < b.maxsal;

Solutions: