atomic

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atomic

1. of, using, or characterized by atomic bombs or atomic energy
2. of, related to, or comprising atoms
3. Logic (of a sentence, formula, etc.) having no internal structure at the appropriate level of analysis. In predicate calculus, Fa is an atomic sentence and Fx an atomic predicate

atomic

(jargon)
(From Greek "atomos", indivisible) Indivisible; cannot be split up.

For example, an instruction may be said to do several things "atomically", i.e. all the things are done immediately, and there is no chance of the instruction being half-completed or of another being interspersed. Used especially to convey that an operation cannot be interrupted.

An atomic data type has no internal structure visible to the program. It can be represented by a flat domain (all elements are equally defined). Machine integers and Booleans are two examples.

An atomic database transaction is one which is guaranteed to complete successfully or not at all. If an error prevents a partially-performed transaction from proceeding to completion, it must be "backed out" to prevent the database being left in an inconsistent state.

atomic

Indivisible. An atomic operation, or atomicity, implies an operation that must be performed entirely or not at all. For example, if machine failure prevents a transaction to be processed to completion, the system will be rolled back to the start of the transaction. See two-phase commit and atom.
References in periodicals archive ?
General Atomics will conduct a final flight test with NASA in 2016 with a sense-and-avoid system that will verify the RTCA's technical standards, Suarez said.
Tihiro retired from General Atomics in 1994 and formed TOY[degrees] Technologies.
But according to an internal quarterly memo issued in 1959 by Atomics International, radioactive gas from the accident was transferred to a storage tank and slowly released through the reactor's stack over several weeks.
The federal Roadmap workshop that Nicklas attended did indeed give a prominent role to nuclear-generated hydrogen, and included representatives from General Atomics, Savannah River Technology Center and Entergy Nuclear.
More recently, successful tests were conducted on the DIII-D tokamak at General Atomics.
The new owners, General Atomics, seemed much like the old ones.
Graham suspects Argonne's candidate reactor may be "overdesigned to produce safety, whereas I think the GE and Atomics International designs will probably emphasize the cost element.
Collins; General Atomics also employed the firm and Mr.
Our recent experiments indicate that the newly tested pellet injection technique can be applied at pellet repetition rates approaching what ITER needs and without harmful effects," said Larry Baylor, a plasma physicist and engineer at ORNL's Fusion Energy Division, who led the collaboration of researchers from General Atomics, the ITER Organization, Lawrence Livermore National Laboratory, Oak Ridge National Laboratory, and the University of California San Diego.
6 /PRNewswire/ -- Algaeventure Systems has been awarded a purchase order by General Atomics (GA) to provide its algae harvesting, dewatering, and drying technology (AVS HDD).
6-million, 30-month contract to General Atomics, in San Diego, Calif.
The Predator B drone flew from General Atomics Aeronautical Systems' Gray Butte Airfield southeast of Lake Los Angeles for Trident Warrior 2006, which started June 13 off the California coast and will continue this week en route to Hawaii.