The Free On-line Dictionary of Computing (30 December 2018):

dynamic database management system
dynamic DBMS

    (dynamic DBMS) A database with "value-based"
   relationships where typically the relationship is specified at
   retrieval time and the locations of related records are
   discovered during retrieval.  Both Independent Logical File
   (ILF) databases and relational databases are value-based.

   The opposite is a static database management system.

   (1998-10-07)