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IBM Systems Journal
Nijssen, ““The Wepion recommendations on the CODASYL DDL 1973,” Data Base Description, North-Holland Pub- lishing Co., Amsterdam (1975), pp. 369-372. . T. B. ... Considerable research and development is going on, and this work should contribute significantly to the evolution of easier-to-use, more powerful data base systems. CITED REFERENCES 1. M. E. ...