Atomic transaction / explanation atomicity for a layman and software provider


Can someone point me to a good blog that explains the concept of atomicity, as described here: atomicity (database systems) - Wikipedia, the free encyclopedia

This article is a good start, but I was expecting something that went into the details, and I could not find such an article/blog myself. I just find more short definitions, or very short answers in other forums. A hope for a display detailed (and slightly longer) on this subject.

Background:

It is not related to the Oracle itself, but in this case the software editor just happens to use Oracle. The problem is that the software contains several places where a single 'transaction user' contains several updates to the table, and the software does a 'validation' on each update instead of treating the entire operation as a single unit. For example: an inventory system that creates a "booking folder" on a point in the inventory. Software updates the record of the inventory table to have a quantity of 'reserved', performs a 'validation', send an email, then creates the record in the table of 'records' booking and emits a commit. If the process out craps on the sending of the e-mail... the item in the inventory table will be pasted into "reserved Qty.", but there is "no record of booking" against her, and therefore no way to 'release' to be 'stuck' in 'not reserved quantity'. The Publisher of the software this is blamed on the fact that the email could not be sent (for some reason any) and doesn't seem to understand that the 'right' thing to do would be to treat the entire transaction as a whole (it fully succeeds or fails completely). I would like something that I can show them who would do a good job of explaining this... And what a transaction like this should be treated together, regardless of any error that occurred during the process.

Transactions

Tags: Database

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