What are the major Components in an RDBMS?

Answer 1

A server for the database. (physical computer)

A database server software, e.g. mysql.

A network or VPN or internet connection to link server and client

A client software, could run client side, e.g. desktop application coded in python

or could be server side and forwarded to a web browser page at a time (cloud computing model) using php or flash.

Answer 2

A database management system comparises many modules each dealing with a specific responsibility of the overall system. The functional components of a database management system are :

a. Database Manager

The database manager is the central software component of a DBMS. It is responsible for converting users queries to appropriate system calls.

b. File Manager

The file manager selects the requested record from the block and transmits it to the database manager.

The file manager is also responsible for managing storage space and structures.

c. Disk Manager

The disk manager performs all the physical input and output. It interacts with the file manager and does read or write on the storage device as requested by the file manager. It views all data as row data. The operations performed by the disk manager are :

 Retrieves blocks of data

 Replaces blocks of data

 Removes blocks of data

Answer 3

A database system is composed of four components; • Data • Hardware • Software • Users

Answer 4

1. RDBMS Server 2. User tables 3. Data dictionary

Answer 5

1. Data security

2. Data Integrity

3. Interactive Query

4. Interactive Data entry and updating

5. Data Independance