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php-deluxe.net - description ACID (716 words) |
 | *Atomicity refers to the ability of the DBMS to guarantee that either all of the tasks of a transaction are performed or none of them are. |
| In both cases, Lock (computer science)s must be acquired on all information that is read and updated. |
| In write ahead logging, atomicity is guaranteed by ensuring that all REDO and UNDO information is written to a log before it is written to the database. |
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NationMaster - Encyclopedia: Atomicity (1341 words) |
| In computer science, atomicity implies indivisibility and irreducibility, so an atomic operation must appear to be performed entirely or not at all. |
| In the context of component-based paradigms, "atomicity" is an element of orthogonality. |
| Programming constructs In computer science, the compare-and-swap CPU instruction is a special instruction that atomically compares the contents of a memory location to a given value and, if they are the same, modifies the contents of that memory location to a given new value. |
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