A _____ Key Is Defined as a Key That Is

question 72

Multiple Choice

A _____ key is defined as a key that is used strictly for data retrieval purposes.

• A) lookup
• B) foreign
• C) candidate
• D) secondary

---

Definitions:

Ethane

A hydrocarbon with the formula C2H6, consisting of two carbon atoms single-bonded together, with three hydrogen atoms bonded to each carbon.

Chain Termination

A process in polymerization or DNA synthesis where growth of the polymer chain is stopped by a terminating molecule.

Ethane

A simple aliphatic hydrocarbon with the formula C2H6, consisting of two carbon atoms single-bonded together and six hydrogen atoms.

UV Light

Ultraviolet light, a type of electromagnetic radiation with a wavelength shorter than visible light but longer than X-rays.