1

In the File system, one representative will represent his/her own department very conservatively, since one individual will know the structure of the system. There is no way you can generate an automated-scheme or a process a data about an employee who is a customer can be linked up with common procedure accessed by all the point-of-sales units.

• Database, Tables, Rows, columns
  • is a set of Tables.
    • A tables is a set of rows
      • A row has a set of columns
        • A column contains similar data types

Apparently looks as a traditional file system but it is not. (Link-1, Link-2)

A common Table will contain necessary links known as Primacy and Foreign key , that will allow the users the retrieve the data from the linked or allied tables.