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Reference Book Principles of Distributed Database System Chapters 4. Distributed DBMS Architecture 5. Distributed Database Design 7.5 Layers of Query Processing Preethi Vishwanath Week 2 : 5 th September 2006 – 12 th September 2006
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],ANSI/SPARC Architecture
Possible ways to put together multiple databases ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Distribution ,[object Object],[object Object],[object Object],[object Object],[object Object]
Heterogeneity ,[object Object],[object Object],[object Object]
Client-Server architecture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Peer-to-Peer Distributed Systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Peer-to-Peer Distributed Systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MDBS Architecture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Global Directory Issues ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Organization of Distributed systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Fragmentation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Example Used Table Name :Employee D3 30K C 300 D2 20K B 200 D1 10K A 100 Dept Sal Name Id D2 20K B 200 D1 10K A 100 Dept Sal Name Id D3 30K C 300 Dept Sal Name Id C 300 B 200 A 100 Name Id 300 200 100 Id D3 30K D2 20K D1 10K Dept Sal
Correctness rules of fragmentation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Comparison of Replication Alternatives Possible application Realistic Possible Application Reality Low High Very High Reliability Easy Difficult Moderate Concurrency Control Difficulty Same Easy or nonexistent Directory Management Difficulty Same Easy Query Processing Partitioning Partial Replication Full Replication
Derived Horizontal Fragmentation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],D3 C 300 D2 B 200 D1 A 100 Dept Name Id 20K D2 30K D3 10K D1 Sal Dept D2 B 200 D1 A 100 Dept Name Id D3 C 300 Dept Name Id
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hybrid Fragmentation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Ddbms1

  • 1. Reference Book Principles of Distributed Database System Chapters 4. Distributed DBMS Architecture 5. Distributed Database Design 7.5 Layers of Query Processing Preethi Vishwanath Week 2 : 5 th September 2006 – 12 th September 2006
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  • 16. Comparison of Replication Alternatives Possible application Realistic Possible Application Reality Low High Very High Reliability Easy Difficult Moderate Concurrency Control Difficulty Same Easy or nonexistent Directory Management Difficulty Same Easy Query Processing Partitioning Partial Replication Full Replication
  • 17.
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