DBMS- A
Database Management System comprises many modules each dealing with a specific responsibility of the overall system. the functional of
DBMS are:
- Database Manager : the database manager is the central software component of a DBMS. it is responsibility for converting user queries to appropriate system calls. it maintains the consistency and integrity of the database and enforces data security. it also synchronizes the simultaneous operations performed by concurrent users. apart from these, it also handle backup and recovery operation.
- File Manager : the file manager services all requests for data. it identifies the block containing the request record. the block is then requested record from the block and transmits it to the database manager. the file manager also responsible for managing storage space and structures.
- Disk Manager : the disk manager performs all the physical input and output. it interacts with the file manager and does a read or write on the storage device as request by the file manager. it views all data as raw data. the operations performed by the disk manager are : retrieves blocks of data, replaces blocks of data and removes blocks of data.
0 Response to "FUNCTIONAL COMPONENTS OF A DATABASE MANAGEMENT SYSTEM (DBMS)"
Post a Comment
Note: Only a member of this blog may post a comment.