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Oracle 1Z0-007 Exam Syllabus Topics:

Oracle Introduction to Oracle9i: SQL Sample Questions:

Question 1

Evaluate the set of SQL statements:
CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT
What is true about the set?

A. The ROLLBACK statement frees the storage space occupies by the DEPT table.
B. The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.
C. The DESCRIBE DEPT statement displays the structure of the DEPT table.
D. The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.

Question 2

You want to display the titles of books that meet these criteria:
1.Purchased before January 21, 2001
2.Price is less then $500 or greater than $900
You want to sort the results by their data of purchase, starting with the most recently
bought book.
Which statement should you use?

A. SELECT book_title
FROM books
WHERE price < 500 or > 900
AND purchase_date < '21-JAN-2001'
ORDER BY purchase date DESC;
B. SELECT book_title
FROM books
WHERE price IN (500,900)
AND purchase_date < '21-JAN-2001'
ORDER BY purchase date ASC;
C. SELECT book_title
FROM books
WHERE (price < 500 OR price > 900)
AND purchase_date < '21-JAN-2001'
ORDER BY purchase date DESC;
D. SELECT book_title
FROM books
WHERE price between 500 and 900
AND purchase_date < '21-JAN-2001'
ORDER BY purchase_date;

Question 3

Examine the data from the ORDERS and CUSTOMERS tables.

Evaluate the SQL statement:
SELECT * FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'Smith');
What is the result when the query is executed?

A. Option D
B. Option E
C. Option A
D. Option B
E. Option C

Question 4

The CUSTOMERS table has these columns:

The CUSTOMER_ID column is the primary key for the table.
You need to determine how dispersed your customer base is.
Which expression finds the number of different countries represented in the CUSTOMERS table?

A. COUNT(UNIQUE(UPPER(country_address)))
B. COUNT(DISTINCT (UPPER(country_address)))
C. COUNT DISTINCT UPPER(country_address)
D. COUNT(DIFF(UPPER(country_address)))
E. COUNT(UPPER(country_address))

Question 5

You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty.
Which statement accomplishes this task?

A. ALTER TABLE students
ADD CONSTRAINT PRIMARY KEY (student_id);
B. ALTER TABLE students
ADD PRIMARY KEY student_id;
C. ALTER TABLE students
ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;
D. ALTER TABLE students
ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
E. ALTER TABLE students
MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);

Solutions: