Transaction Management

• A transaction is a single unit of execution program execution (e.g. book a seat)
• Transactions provide concurrency control
• Transactions support crash recovery

Atomic

Database ensures that all actions are carried out, or none

Consistency

Users ensure that transactions leave the data in a consistent state

Isolation

Users to not have to worry about concurrently executing transactions

Durability

Completed transactions persist after a crash even if the database has not been updated

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 Last change: Monday, December 1, 2003 1:12 pm
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