Database

Database : a collection of information stored on computer disk systematically .

Software used to create , mengola , maintain , monitor and move the database is called DBMS ( Database Management System ) .

DATABASE advantages :

= > Easy to store information of a polynomial .

= > Easy to retrieve information quickly and flexibly .

= > Easy to manage information .

= > Easy to menyetak information .

= > Easy to distribute information .

Hierarchy DATABASE :

1 . Bit

2 . Byte

3 . Characters

4 . Field

5 . Record

6 . Table

7 . File

8 . Database

Model DATABASE :

1 . Hierarchical Model ( Hierarchical Database )

     = > Like a tree model .

     = > Not flexible because the limit is only one- to-many relationship .

2 . Network Model ( Database Network )

     = > As a network .

     = > The structure may permit - to-many relationship .

3 . Relational Model ( Relational Database )

     = > The most widely used database models and flexible .

     = > Record inter- linked tables with the " key value" .

4 . Object Oriented Model

     = > Have the ability to handle data graphics , images , video , and text .