Explain data Dictionary with its contents.
Answers
A data dictionary is a file or a set of files that contains a database's metadata. The data dictionary contains records about other objects in the database, such as data ownership, data relationships to other objects, and other data. The data dictionary is a crucial component of any relational database.
A data dictionary contains metadata i.e data about the database. The data dictionary is very important as it contains information such as what is in the database, who is allowed to access it, where is the database physically stored etc. ... Physical information about the tables such as where they are stored.
The data dictionarycontains records about other objects in the database, such as dataownership, data relationships to other objects, and other data.
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