Database System PPT Explanation

1. Distributed Database System
• Concepts, Architecture, and Applications
• Presented by: [Your Name]

2. Introduction
• • Definition of Distributed Database System
(DDBS)
• • Difference between centralized and
distributed databases

3. Key Characteristics
• • Data is stored across multiple sites
• • Data is logically interrelated
• • Transparency features (location, replication,
fragmentation)

4. Types of Distributed Databases
• • Homogeneous DDBS
• • Heterogeneous DDBS
• • Federated databases

5. Advantages
• • Improved reliability and availability
• • Better performance
• • Scalability
• • Modular growth

6. Disadvantages
• • Complex implementation and management
• • Higher costs
• • Security risks
• • Data integrity challenges

7. Transparency in DDBS
• • Location Transparency
• • Replication Transparency
• • Fragmentation Transparency
• • Transaction Transparency

8. Distributed Database Architecture
• • Client-Server Architecture
• • Peer-to-Peer Architecture
• • Multi-DBMS Architecture

9. Data Fragmentation and Allocation
• • Horizontal and Vertical Fragmentation
• • Data Replication
• • Allocation Strategies

10. Concurrency Control
• • Locking Mechanisms
• • Timestamps
• • Two-Phase Commit Protocol (2PC)

11. Recovery in DDBS
• • Failure detection
• • Recovery strategies (e.g., checkpointing,
logging)

12. Real-World Applications
• • Banking Systems
• • Telecom Networks
• • E-Commerce Platforms
• • Cloud Databases

13. Summary
• • Recap of key concepts
• • Importance of DDBS in modern computing

14. References
• • Books, journals, websites