QUESTION 125
Observe the structure of the table employees:
DESC employees
Name Null? Type
------------------ --------------- ----------------------
emp_no NOT NULL VARCHAR(5) PRIMARY KEY
emp_fname NOT NULL VARCHAR (15)
emp_lname NOT NULL VARCHAR (15)
emp_dob NOT NULL DATE
emp_dtofjoin NOT NULL DATE
emp_salary NUMBER(5,2)
The table contains 8475 records.
One of the employees wants to know the names of allemployees of the company. For this, he fires the
following query:
SELECT * FROM EMPLOYEES ORDER BY emp_fname;
Since the operation performed on executing the querycannot fit into memory, it requires disk space to
complete the operation. Which of the following types of segments will Oracle allocate to complete the
operation and to provide the required result?
A. Rollback segment
B. Temporary segment
C. Data segment
D. Index segment
Answer: B
同155题：http://blog.csdn.net/rlhua/article/details/13503817
Explanation/Reference:
Section: SQL, PL/SQL, Packages, Functions, Jobs & Views