Database Differentiation

Description of the data models

A detailed description of all the tables that a database consists of is referred to as a data dictionary. A data dictionary will contain all the attribute characteristics and names for every table found within a database system. A data dictionary can also be referred to as a metadata repository. This is because it contains information like relationships with other data, meaning, usage, format, and origin. According to Coronel, Morris, and Rob (2011)

the data dictionary is a vital component for any database management systems as it is used for determining the database structure.

Data fragmentation is a characteristic of database management systems which allows for the breaking of a single object into two or more fragments or segments. The object being broken down might be a system or user database. Each of the broken fragments can then be stored at any location...
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