The term DDL is also used in the general sense to describe any language that refers to data or data structures, so not every data definition language file uses the .DDL file extension.
Rịba ama: A na-ejikwa okwu DDL n'ozuzu ya kọwaa asụsụ ọ bụla nke na-ezo aka na data ma ọ bụ nhazi data, ya mere, ọ bụghị okwu asụsụ nchịkọta data ọ bụla na-eji ntinye faịlụ DDL.