Database and its Types.

This is the short presentation about database and its types.

1. Database Prepared by: CH. Abdur Rehman Afzal Group: GME-03

2. Database is the collection of information that is organized so that it can be easily accessed, managed and updated. It mainly contains data records or files.

3. Most databases contain multiple tables, which may include several different fields. For Instance, a company database may include tables for products employees and financial records.

4. Database is usually controlled by Database Management System(DBMS).

5. A Database Management System(DBMS) is a software package designed to define, retrieve, and manage data in a database. DBMS generally manipulates data itself, data format, field names, record structure and file structure.

6. There are some types of Database as follows: 1.Centralised Database 2.Distributed Database 3.NoSQL Database 4.Cloud Database 5.Relational Database 6.Network Database 7.Object-Oriented Database 8.Hierarchical Database

7. 1.Centralised Database(CDB): It is a database that is located, stored and maintained in a single location. 2.Distributed Database: It consists of two or more files located in different sites either on same network or different networks.

8. 3.NoSQL Database: It provide mechanism for storage and retrieval of data. 4.Cloud Database: It typically runs on cloud computing platform and access to database is provided as-a-service.

9. 5.Relational Database: It uses a structure that allows us to identify and access data in relation to another piece of data in a database.

10. 6.Network Database: It is a type of database wherein multiple member records or files can be linked to multiple owner files and vice versa. 7.Object-Oriented Database: It is a database that subscribes to a model with information represented by objects.

11. 8.Hierarchical Database: It is a data model in which data is organized into a tree-like structure. The data are stored as records which are connected to one another through links.