Database Management Systems (DBMS) are programs used for the creation, maintenance, and access of databases, featuring components like data dictionaries, utilities, query languages, report generators, access security, and backup/recovery options. These features ensure data integrity, security, and accessibility, making them essential for effective database management. Understanding the functions and capabilities of DBMS is critical for organizations to efficiently handle their data.

1. Features of
Database
Management
Systems
A DETAILED OVERVIEW

2. Database management system (DBMS)
Collection of programs used to create
maintain and access database
Database managers software are used to
control the overall structure of a database
Used by different organizations for different
purposes

3. Features of Database
Management Systems
Data Dictionary
Utilities
Query Language
Report Generator
Access Security
Backup and Recovery

4. Data Dictionary
Stores all data
definitions for
a database
Monitors data
entry
Ensures data
adheres to
defined rules
Used for data
access
authorization
Also called
repository

5. Utilities
Used to maintain databases
Processes data, records, and files
Backup and recovery procedures

6. Query Language
Performs operations on databases
Popular query language is SQL (Structure Query Language)
Commands: SELECT, DELETE, CREATE, MODIFY, UPDATE, INSERT
Purposes:
- Create table structures
- Enter data in tables
- Retrieve data from tables
- Update data in tables
- Delete data from tables

7. Report
Generator
Produces reports in
different formats
Formats page numbers,
dates, titles, and column
headings
Also called report writer

8. Access Security
Protects database from
unauthorized access
Several procedures for data
security
Allows access through
passwords
Different users have different
access levels

9. Backup and
Recovery
Provides facility for
backup and recovery
Stores an additional
copy of data
Data can be recovered
if original file is lost or
damaged

10. Conclusion
Database Management Systems have
various features that ensure data integrity,
security, and accessibility.
Understanding these features is crucial for
efficient database management.