Answer:
Database - is an integrated collection of logically related records or files. A database consolidates records previously stored in separate files into a common pool of data records that provides data for many applications. The data is managed by systems software called database management systems (DBMS).
Hierarchical Data Structure: Ease with which data can be stored and retrieved in stru...
Network Structure: More flexible that the hierarchical model.Ability to provide sophist...
Relational Structure: Flexible in that it can handle ad hoc information requests.Easy f...