When Duplicate Column Names Exist in a Database and You

question 25

Multiple Choice

When duplicate column names exist in a database and you need to indicate the column to which you are referring,____.​

• A) ​do not use these two tables together
• B) ​do not use the column names in the same statement
• C) ​write both the table name and the column name, separated by a period
• D) ​write the table name only

---

Definitions:

Refract Light Rays

The bending of light as it passes from one substance into another substance that has a different density, a fundamental principle in optics.

Receptor

A protein molecule that receives and responds to chemical signals in the body.

Retina

A layer at the back of the eyeball containing cells sensitive to light, which trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.

Extraocular Muscles

The six muscles that control the movement of the eye and are located outside the eyeball.