This document provides an overview and agenda for a presentation on database management. It covers topics such as the definition and importance of databases, different types of databases including relational and NoSQL, components of a database system, database design principles like normalization, data querying and manipulation using SQL, database security, administration and maintenance. The document also discusses normalization forms including 1NF, 2NF, 3NF and BCNF and provides examples.

1. Introduction to Database
Management
Gevita Chinnaiah
11/06/2023

2. Agenda
• Overview of database management
• Importance of databases
• Types of databases
• Relational database management systems (RDBMS)
• Components of a database system
• Database design and normalization
• Data querying and manipulation
• Database security and backup
• Database administration and maintenance
• Conclusion and Q&A

3. Overview of Database Management
• Definition of database management
• Role of databases in organizing and storing
data efficiently
• Evolution of database management systems
(DBMS)
• Benefits of using a DBMS

4. Importance of Databases
• Centralized data storage and accessibility

5. • Data consistency and integrity
• Improved data security
• Efficient data retrieval and manipulation
• Support for complex queries and analysis

6. Types of Databases
• Relational databases

7. • Object-oriented databases
• NoSQL databases

8. Relational Database Management
Systems (RDBMS)
• Definition of RDBMS
• Key features and advantages
• Popular RDBMS examples (e.g., Oracle,
MySQL, SQL Server)

9. Components of a Database System
• Data model
• Database schema
• Data dictionary
• Data storage and access methods
• Query processor
• Transaction manager
• Recovery manager

10. Database Design and Normalization
• Conceptual, logical, and physical database
design
• Importance of normalization
• Normalization levels (1NF, 2NF, 3NF, BCNF)

11. Normalization levels (1NF)
• Rules for First Normal Form
– Rule 1: Single Valued Attributes
– Rule 2: Attribute Domain should not change
– Rule 3: Unique name for Attributes/Columns
– Rule 4: Order doesn't matters

12. Normalization levels (1NF)
• Time for an Example
• How to solve this Problem?

13. Normalization levels (1NF)
• Using the First Normal Form, data redundancy
increases

14. Normalization levels (2NF)
• What is Second Normal Form?
– The table should be in the First Normal Form.
– There should be no Partial Dependency.
• What is Dependency?
• Case 1

15. What is Partial Dependency?
• Table Subject
• Table Score
• But where is Partial Dependency?

16. How to remove Partial Dependency?
• Subject table
• Score table

17. Normalization levels (3NF)
• Student
• Subject
• Score
• Requirements for Third Normal Form
– It should be in the Second Normal form.
– And it should not have Transitive Dependency.

18. Normalization levels (3NF)
• What is Transitive Dependency?
• How to remove Transitive Dependency?

19. Normalization levels (3NF)
• Score Table: In 3rd Normal Form
• The new Exam table

20. Advantage of removing Transitive
Dependency
• Amount of data duplication is reduced.
• Data integrity achieved.

21. Boyce-Codd Normal Form (BCNF)
• Rules for BCNF
– It should be in the Third Normal Form.
– And, for any dependency A → B, A should be
a super key.

22. Boyce-Codd Normal Form (BCNF)
• Student Table
• Professor Table

23. Data Querying and Manipulation
• SQL (Structured Query Language)
• Basic SQL queries (SELECT, INSERT, UPDATE,
DELETE)
• Advanced SQL operations (JOIN, GROUP BY,
HAVING)
• Data manipulation language (DML) and data
definition language (DDL) statements

24. Database Security and Backup
• Importance of data security
• User authentication and access control
• Encryption and data masking
• Database backup and recovery strategies
• Disaster recovery planning

25. Database Administration and
Maintenance
• Role of database administrators (DBAs)
• Performance tuning and optimization
• Monitoring and troubleshooting
• Indexing and query optimization
• Database versioning and upgrades

26. Conclusion and Q&A
• Importance of database management in
modern organizations
• Opportunities for further learning and
exploration
• Question and answer session