quick guide

Flat File DBMS,
Hierarchical DBMS,
Network DBMS,
Relational DBMS,
Object-Oriented DBMS,
Object-Relational DBMS,
Web enabled DBMS.

What is Database Management System(DBMS):
Database Management System is a software that is used to create, maintain, and provide controlled access to user databases.
DBMS should provide
Creating database,
Updating database,
Sorting the database,
Retrieving of data from database.

Metadata: It is the data which describes the properties or characteristics of end users data and the context of the data.
Metadata properties can include information such as:
Data name,
Definitions,
Length or size,
Values allowed.
Metadata and data are always separate. Metadata enables the database designers and programmers to understand exactly in which form the data should exist within the system.

What is Data?
It is stored representation of objects and events that have meaning and importance in the users environment.
Data can be structured or unstructured.
Structured --> Student name, address…
Unstructured --> Student photo, Address map

ORACLE="Oak Ridge Automatic Computer Logical Engine"

O =OAK
R = RIDGE
A = AUTOMATIC
C = COMPUTER
L = LOGICAL
E = ENGINE