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komatta

asked on

ACID

hi everyone
can anyone plzzzzzzzzzzzzzzz explain 2 me the concept of ACID in short.
i have 2 undergo an examination n i need it desperately.
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jmingo

this what you are looking for??



ACID is the acronym used to describe the four properties of an enterprise-level transaction :

ATOMICITY: a transaction should be done or undone completely. In the event of a failure, all operations and procedures should be undone, and all data should rollback to its previous state.

CONSISTENCY: a transaction should transform a system from one consistent state to another consistent state.

ISOLATION: each transaction should happen independently of other transactions occurring at the same time.

DURABILITY: Completed transactions should remain permanent, even during system failure.
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ASKER

jmingo
does that mean transaction management in short?????
ASKER CERTIFIED SOLUTION
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Éric Moreau
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Transactions enforce ACID.
komatta, if you DO NOT know what transaction management and ACID are, then you are going to fail this examination, as these are FUNDAMENTAL concepts, and just getting a quick answer here is NOT going to help you.

AW
(For database transactions)
LSD-"ACID"

LSD (lysergic acid diethylamide) is one of the major drugs making up the hallucinogen class. LSD was discovered in 1938 and is one of the most potent mood-changing chemicals. It is manufactured from lysergic acid, which is found in ergot, a fungus that grows on rye and other grains.

LSD, commonly referred to as "acid," is sold on the street in tablets, capsules, and, occasionally, liquid form. It is odorless, colorless, and has a slightly bitter taste and is usually taken by mouth. Often LSD is added to absorbent paper, such as blotter paper, and divided into small decorated squares, with each square representing one dose.

The Drug Enforcement Administration reports that the strength of LSD samples obtained currently from illicit sources ranges from 20 to 80 micrograms of LSD per dose. This is considerably less than the levels reported during the 1960s and early 1970s, when the dosage ranged from 100 to 200 micrograms, or higher, per unit.



>>i need it desperately

Sounds like you are already hooked.  Seek professional help.
I was waiting for someone to post that!

;-)

(Sorry I had to comment)
I couldn't help but laugh
Good one AzraSound
ROFLMAO
LOL, it'll probably help you in the exam
"it'll probably help you in the exam ",
only to not feel too sad after the result....
by the way, Azra, you were real ACID with your comment.
NOW lets be nice everyone! (STILL rotflmao!)

There should be an award for most inciteful inquiry.

;-)
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ASKER

1st of all thanx emoreau for a nice little article.it really made me plunge into the basics.
A BIG THANX TO AZRA. AFTER HAVING READ EMOREAU`S ARTICLE I FEEL QUITE THE SAME AS
ALL YOU BUDDIES. N SURELY I`LL FOLLOW YOUR ANSWER IN SOME CHEMISTRY EXAM AZRA.
THNX A LOT. ;-)
Glad I could help  ;-)