Testing for Null Values Is Done by Using the ________

question 36

Multiple Choice

Testing for Null values is done by using the ________ comparison operator.

• A) EQUALS NULL
• B) Null is the absence of value, so we don't have to test for it
• C) LIKE NULL
• D) IS NULL

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Definitions:

Intravenous Pyelography

A radiographic examination of the kidneys, ureters, and urinary bladder using intravenous contrast material to view these structures.

Radiopaque Substance

A material that does not allow X-rays or other forms of radiation to pass through, appearing white or light on a radiograph.

Cystoscopy

A diagnostic procedure that allows the doctor to examine the bladder and the urethra using a thin, lighted instrument called a cystoscope.

Prefix Dys-

A prefix in medical terminology denoting a difficulty, pain, or abnormality in the function of a specified body part or system.