Advanced Database Management System - Tutorials and Notes: Date's Twelve Rules for Distributed Database Systems - No reliance on a central site

Saturday, 14 March 2015

Date's Twelve Rules for Distributed Database Systems - No reliance on a central site


Date's Twelve Rules for Distributed Database Systems - No reliance on a central site rule


2. No reliance on a central site
There should not be a central site concept for some central service. The major drawbacks of central server concept are Bottleneck and Single Point of Failure. Both are vulnerable for a system to continue to function. These can be avoided if we insist ‘No reliance on a central site’.
For example, the sites/servers at different locations Chennai, Mumbai, and New Delhi are capable of handling transactions, handling locks, coordinating transactions initiated at that site. That means, all the sites having the components Transaction manager and transaction coordinator to handle transactions efficiently without depend on other single site as central site.


Distributed database on several sites over the network






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