An Entity Has an Unique Attribute Which Is Known as The

question 72

Multiple Choice

An entity has an unique attribute which is known as the:

• A) identifier.
• B) index field.
• C) key attribute.
• D) foreign key.

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Definitions:

Gametes

Reproductive cells (sperms in males and eggs in females) that unite during sexual reproduction to form a new organism.

Vitelline Envelope

The Vitelline Envelope is a protective layer that surrounds the plasma membrane of ovum (egg cells), particularly in invertebrates, involved in fertilization.

Jelly Coat

One of the acellular coverings of the eggs of certain animals, such as echinoderms.

Sea Urchin Egg

The reproductive cell from which a sea urchin develops, often used in developmental biology research.