What Is a Data Dictionary in Microsoft SQL?
What Is a Data Dictionary in Microsoft SQL? SQL 1 Hour Taster Course : Follow link for details and to book A data dictionary is a document or database that stores information about a Microsoft SQL database rather than the actual data itself. It acts as a reference guide that explains how the database is organized. A data dictionary includes details such as: Tables – The different sections where related data is stored. Columns – The individual fields in each table, such as Name or Date of Birth . Data types – The kind of information each column can hold, such as text, numbers, or dates. Constraints – Rules that help keep data accurate, for example requiring a value or preventing duplicates. Relationships – How different tables are connected to one another. A data dictionary can also provide extra information, including: Field definitions – A description of what each column is used for. Allowed values – The values that can be entered into a field. Ownership details – Who is r...