Data dictionary refers to the definition and description of data items, data structures, data flows, data storage, processing logic, external entities, etc. Its purpose is to give a detailed explanation of each element in the data flow diagram. Use the data dictionary For simple modeling projects.
A data dictionary is a user-accessible directory of database and application metadata. Active data dictionary refers to a data dictionary whose contents can be automatically updated by the DBMS when the database or application structure is modified. A passive data dictionary is a data dictionary whose contents must be updated manually when modified.
