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Oracle 1Z0-007 Exam Syllabus Topics:

Oracle Introduction to Oracle9i: SQL Sample Questions:

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

2. Which clause should you use to exclude group results?

A) RESTRICT
B) WHERE
C) ORDER BY
D) GROUP BY
E) HAVING

3. Evaluate the SQL statement:
SELECT ROUND (TRUNC(MOD(1600,10),-1),2)
FROM dual;
What will be displayed?

A) 1
B) 0
C) An error statement
D) 0.00

4. Which SQL statement defines the FOREIGN KEY constraint on the DEPTNO column of the EMP table?

A) CREATE TABLE EMP (empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2) FOREIGN KEY
CONSTRAINT emp deptno fk REFERENCES dept (deptno));
B) CREATE TABLE EMP
(empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2) NOT NULL
CONSTRAINT emp_deptno_fk FOREIGN KEY deptno
REFERENCES dept deptno);
C) CREATE TABLE EMP
(empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2)
CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));
D) CREATE TABLE EMP
(empno NUMBER(4)
ename VARCHAR2(35),
deptno NUMBER(7,2) NOT NULL,
CONSTRAINT emp_deptno_fk REFERENCES dept (deptno)
FOREIGN KEY (deptno));

5. Evaluate these two SQL statements:
SELECT last_name, salary , hire_date
FROM EMPLOYEES
ORDER BY salary DESC;
SELECT last_name, salary, hire_date
FROM EMPLOYEES
ORDER BY 2 DESC;
What is true about them?

A) There is no need to specify DESC because the results are sorted in descending order by default.
B) The second statement returns a syntax error.
C) The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
D) The two statements produce identical results.

Solutions: