Database Administrator: Roles & Responsibilities
- 1. DATABASE ADMINISTRATOR PRESENTED BY :- GANGOTRI GUPTA PGDCA STUDENT KMT GOVT. GIRLS COLLEGE RAIGARH (C.G.)
- 2. CONTENTS What is Database ? What is Database Administrator ? Primary Roles of DBA Functions of DBA :- Skills Required for DBA • Schema Definition • Approving Data access • Monitoring Performance • Backup and Recovery
- 3. WHAT IS DATABASE ? • Database is a group of data . • Data is stored systematically in the database. • Database is an organized collection of data in which the user can easily insert , delete and update the data . • In the database , data is stored in table . A database can contain one or more tables. • It can be managed through a database management system (DBMS), a software used to manage data. • Database refers to related data in a structured form. • The main purpose of database is to operate a large amount of information by storing, retrieving and managing data. • There are many database available like MySQL,Oracle, SQL server, etc.
- 4. WHAT IS DATABASE ADMINISTRATOR ? A database administrator is a person responsible for the These are those users who are very familiar with the database. They have complete control over the database. DBA is responsible for any type of action in database. The DBA is responsible for understanding and managing the overall database environment. • installation • configuration • upgradation • administratin • monitoring and maintenance of database.
- 5. PRIMARY ROLES OF DBA • Database design • Performance issues • Database accessibility • Capacity issues • Data replication • Table maintenance operations logical Design planning Testing implementation DBA Training physical conceptual
- 6. FUNCTIONS OF DBA Schema Definition :- Approving Data Access :- • It defines the schema and also controls all three levels of the database. • Schema refers to the overall logical structure of the database. • According to this schema , database will be developed to store the data required for an organization. • It provides security to the database and allows only authorized users to access and modify the database. • The DBA determines which parts of the databse users need access to.
- 7. Monitoring Performance :- Backup and Recovery :- • DBA monitors the performance of the system. • The DBA ensures that optimal performance is maintained by making changes to the physical or logical schema if • necessary. • Database should not be lost or damaged. • DBA periodically takes backup of the database on magnetic tapes or remote servers. • In case of failure , such as a virus attack , the database is recovered from this backup.
- 8. SKILLS REQUIRED FOR DBA Database designing . Knowledge of structured query language (SQL). Know about distributed architecture. Knowledge on different operating servers. Idea on Relational Database Management System (RDBMS). Ready to face challenges and solve the problems quicky. ------------------------------------------------------------------------------------------------------