Structure of the CUSTOMERS Table

question 115

Multiple Choice

Structure of the CUSTOMERS table
​
-Which of the following commands will increase the size of the CITY column in the CUSTOMERS table from 12 to 20 and increase size of the LASTNAME column from 10 to 14?

• A) ​ALTER TABLE customers MODIFY (city VARCHAR2(+8),lastname VARCHAR2(+4));
• B) ​ALTER TABLE customers MODIFY (city VARCHAR2(20),lastname VARCHAR2(14));
• C) ​ALTER TABLE customers MODIFY (city (+8),lastname (+4));
• D) ​ALTER TABLE customers MODIFY (city (20),lastname (14));

---

Definitions:

Conditional Stimulus

In classical conditioning, a previously neutral stimulus that, after being associated with an unconditioned stimulus, comes to trigger a conditioned response.

Unconditional Response

An automatic, reflexive reaction to a stimulus that does not require learning or conditioning to occur.

Conditional Response

A learned response to a previously neutral stimulus that has become associated with another stimulus through conditioning.

Unconditional Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without any prior learning.