A Data Dictionary is a description of data in business terms, also including information about the data such as data types, details of structure, and security restrictions. Unlike Business Glossaries, which focus on data across the organization, Data Dictionaries support Data Warehouses by defining how to use them. The content of the Data Dictionary often originates from the logical data model. Data Dictionaries typically result in higher-quality Metadata due to a disciplined and systematic approach to managing definitions.
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