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<TITLE>Transactions - What's it all about? </TITLE>
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<P>Slide 38 of 80</P>
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<H2>Transactions - What's it all about? </H2>
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<LI><H2>Far more than just locking
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<LI><H2>The A.C.I.D. test
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<LI>Atomicity - Consistency - Isolation - Durability
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<LI><H2>True transactions give true safety
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<LI>even from power failures and system crashes!
<LI>Incomplete transactions are automatically rolled-back by the database server when it's restarted.
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<LI><H2>Also removes burden of undoing incomplete changes
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<LI><H2>Hard to implement (for the vendor)
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<LI>and can have significant performance cost
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<LI><H2>A very large topic worthy of an entire tutorial</H2>
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