A database can be defined as a well structured collection of inter related data. This makes us capable to store and retrieve data efficiently. Basically a database is a structure that is directly related with a real world object. A database structure further defines this real world object. For example, suppose we are designing a database for an organization, then there should be database describing information of the employees working with it. This database will store the information depending upon the requirement of organization system. The database structure of an organization will something looks like:
