A(n)____ is not a function,but can be added to a table query or into other SQL commands to retrieve values not normally accessed from simple table queries.
A) NULL
B) marker
C) index
D) pseudocolumn

Question

Quizplus · Accepted Answer

A pseudocolumn is a special type of column that is not part of the table structure but can be included in SQL queries to provide additional information or functionality. Examples of popular pseudocolumns include ROWID, ROWNUM, and SYSDATE.

A(n)____ Is Not a Function,but Can Be Added to a Table