Function of metadata for the three-layer architecture
Explain the function of metadata for the three-layer architecture?
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Each of the three layers has a metadata layer connected with it. The metadata layer expresses the properties or characteristics of the data. The operational metadata illustrate the data employed in the different operational and external systems. The enterprise data warehouse metadata illustrate the reconciled data layer. The data mart metadata illustrates the derived data layer.
Consider a MOVIE database in which data is recorded about the movie industry. The data requirements are summarized as follows: ¦ Each movie is identified by title and year of release. Each movie has a length in minutes. Each has a production company, and each is classified under one or more genre
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