What Is a Primary Key

question 228

Multiple Choice

What is a primary key?

• A)A field (or group of fields) that uniquely identifies a given entity in a table.
• B)A primary key of one table that appears as an attribute in another table and acts to provide a logical relationship among the two tables.
• C)Characteristics or properties of an entity.
• D)A field (or group of fields) that uniquely identifies a given attribute in a table.

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Definitions:

Tinnitus

Ringing heard in one or both ears.

Swayback

A postural condition characterized by an exaggerated inward curve of the lower back, leading to a forward tilting of the pelvis.

Spoon Nails

A nail disorder characterized by a concave, spoon-like shape of the fingernails or toenails, it can indicate iron deficiency or other health issues.

Venous Problems

Medical issues related to the veins, which may include conditions like varicose veins, venous insufficiency, or deep vein thrombosis.