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Encyclopedia > Atomic (computer science)
Atomicity

  Results from FactBites:
 
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.
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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