There was a young fellow named Corey
          Whose career was not showered in glory,
            He had a really bad day
            When he just couldn’t say . . .
          Meta Data Repository


          The simple definition of "metadata" (or "meta data") is that it is "data about data". The truth is far more complex and subtle than that. But companies are now discovering that they must come to terms with it.
          David Hay has written five articles for TDAN.com, describing the specific nature of metadata, presenting an extensive data model of their structure.
            A Repository Model -- The Analysis Model
            • The Data Administration Newsletter, Issue 13 (3d Quarter, 2000)
            A Repository Model -- The Relational Design Model
            • The Data Administration Newsletter, Issue 14 (4th Quarter, 2000)
            A Repository Model -- The Object-oriented Design Model
            • The Data Administration Newsletter, Issue 15 (1st Quarter 2001)
            A Repository Model -- Business Rules (Structural Assertions and Derivations)
            • The Data Administration Newsletter, Issue 19 (1st Quarter, 2002)
            A Repository Model -- Business Rules (Action Assertions)
            • The Data Administration Newsletter, Issue 20 (2d Quarter, 2002)
            The Common Warehouse Metamodel
            • A rendering of the OMG version of metadata in Richard Barker's entity/relationship notation.

            Bibliography


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