BIF

BIF

Built In Function. Refers to any function which is provided natively by the development language and not developed from the constructs provided by the language.

For example, in SQL the function "CONCAT" (which provides string concatenation) is a BiF, whereas a stored procedure written to do the same thing would not be.

Built in Function can be written as BiF or BIF. In a given context (i.e. for a specific development platform) there may be a convention on all capitals or mixed-case, but there is no general standard on whether it should be written as BiF or BIF.