Explain How to Query for Null and Zero-Length String Values

question 33

Essay

Explain how to query for null and zero-length string values.

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Definitions:

Topical

Pertaining to the surface, especially medications or treatments applied directly to a particular area of the body.

Parenteral

Administering substances into the body in a manner other than through the digestive system, such as by intravenous or intramuscular injection.

Sublingual

A method of administration for drugs by placing them under the tongue where they dissolve and are absorbed into the bloodstream.

Topical

Pertaining to the surface, especially medications or applications intended for use on the skin or outer body surfaces.