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3 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Distributed Database System (DDBS) |
- The database is divided into a number of cooperating databases each located at a separate site. - Users of the database at any site are allowed to access both locally and remotely stored data |
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DDBS vs Centralized Database System |
- Increased reliability since data is spread over several sites - Improved transaction processing times - Reduced saturation since the communication traffic is distributed - Modularity eases maintenance and upgrading |
Four advantages |
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Parameters of DDBS Design |
1. Volume and activity of database 2. Number of hosts/sites 3. Storage facilities at sites 4. Channel Capacity 5. Cost Factor |
Five things to consider when implementing a DDBS |
