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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.
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