單項(xiàng)選擇題

Which statement describes the ROWID data type?（）

A. Binary data up to 4 gigabytes.
B. Character data up to 4 gigabytes.
C. Raw binary data of variable length up to 2 gigabytes.
D. Binary data stored in an external file, up to 4 gigabytes.
E. A hexadecimal string representing the unique address of a row in its table.

你可能感興趣的試題

單項(xiàng)選擇題

You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns:

Which SELECT statement accomplishes this task?（）

A. SELECT*   FROM customers;
B. SELECT name, address   FROM customers;
C. SELECT id, name, address, phone   FROM customers;
D. SELECT cust_name, cust_address   FROM customers;
E. SELECT cust_id, cust_name, cust_address, cust_phone   FROM customers;

單項(xiàng)選擇題

The STUDENT_GRADES table has these columns
STUDENT_ID NUMBER(12)
SEMESTER_END DATE
GPA NUMBER(4,3)
Which statement finds students who have a grade point average (GPA) greater than 3.0 for the calendar year 2001?（）

A. SELECT student_id, gpa FROM student_grades WHERE semester_end BETWEEN '01-JAN-2001' AND '31-DEC-2001' OR gpa > 3.;
B. SELECT student_id, gpa FROM student_grades WHERE semester_end BETWEEN '01-JAN-2001' AND '31-DEC-2001' AND gpa gt 3.0;
C. SELECT student_id, gpa FROM student_grades WHERE semester_end BETWEEN '01-JAN-2001' AND '31-DEC-2001' AND gpa > 3.0;
D. SELECT student_id, gpa FROM student_grades WHERE semester_end > '01-JAN-2001' OR semester_end < '31-DEC-2001' AND gpa >=s 3.0;

Which statement describes the ROWID data type?（）

你可能感興趣的試題

You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns: Which SELECT statement accomplishes this task?（）

The STUDENT_GRADES table has these columns STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) Which statement finds students who have a grade point average (GPA) greater than 3.0 for the calendar year 2001?（）

You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns:

Which SELECT statement accomplishes this task?（）

The STUDENT_GRADES table has these columns
STUDENT_ID NUMBER(12)
SEMESTER_END DATE
GPA NUMBER(4,3)
Which statement finds students who have a grade point average (GPA) greater than 3.0 for the calendar year 2001?（）