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Data Model Patterns: A Metadata Map by David C. Hay

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ABOUT METADATA MODELS

There once was a fellow named Corey

Whose career was not covered in glory

He had a bad day

When he just couldn’t say

Me-ta-da-ta Re-pos-i-TOR-y.

WHAT ARE METADATA?*

During the 1990s, the concept of data warehouse** swept the information technology industry. After many years of trying, it appears finally to be possible for a company to store all of its data in one place for purposes of reporting and analysis. The technology for doing this is still new, and the first attempts have had mixed results, but the effort has been quite serious.

One of the problems that arose from this effort was the realization that if a senior executive is going to ask a giant database a question it is necessary to know just what is in the ...

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