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Question ID 8045

Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2 (25) LAST_NAME VARCHAR2 (25) HIRE_DATE DATE Which UPDATE statement is valid?

Option A

UPDATE employees SET first_name = 'John' SET last_name = 'Smith' WHERE employee_id = 180;

Option B

UPDATE employees SET first_name = 'John', SET last_name = 'Smoth' WHERE employee_id = 180;

Option C

UPDATE employee SET first_name = 'John' AND last_name = 'Smith' WHERE employee_id = 180;

Option D

UPDATE employee SET first_name = 'John', last_name = 'Smith' WHERE employee_id = 180;

Correct Answer D
Explanation


Question ID 8046

What is true about sequences?

Option A

The start value of the sequence is always 1.

Option B

A sequence always increments by 1.

Option C

The minimum value of an ascending sequence defaults to 1.

Option D

The maximum value of descending sequence defaults to 1

Correct Answer C
Explanation Explanation/Reference: Explanation: The Start values of a Sequence defaults to 1 but another value may be specified with the START WITH clause

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