Meta-programming can be defined as creating application programs by writing programs that produce programs (application generators). Meta-programming is programming and meta-data management is data management. STEP is an ISO 10303 standard intended to data modelling and exchange. STEP standard defines very useful software tools, as EXPRESS an object-oriented modelling language, and STEP technology can be applied for the design and implementation of application generators. The position of the paper is that SQL-PL/SQL or EXPRESS declarative and iterative features are powerful enough to build application generators.