What is delta?

Former Member · ‎2007 Sep 08

What is Delta....When we go for delta

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balaji velpuri

RichHeilman · ‎2007 Sep 11

Dictionary.com is a wonderful tool.

http://dictionary.reference.com/browse/delta

delta

1. A quantitative change, especially a small or incremental one (this use is general in physics and engineering). "I just doubled the speed of my program!" "What was the delta on program size?" "About 30 percent." (He doubled the speed of his program, but increased its size by only 30 percent.)

2. [Unix] A diff, especially a diff stored under the set of version-control tools called SCCS (Source Code Control System) or RCS (Revision Control System). See change management.

3. A small quantity, but not as small as epsilon. The jargon usage of delta and epsilon stems from the traditional use of these letters in mathematics for very small numerical quantities, particularly in "epsilon-delta" proofs in limit theory (as in the differential calculus). The term delta is often used, once epsilon has been mentioned, to mean a quantity that is slightly bigger than epsilon but still very small. "The cost isn't epsilon, but it's delta" means that the cost isn't totally negligible, but it is nevertheless very small. Common constructions include "within delta of ---", "within epsilon of ---": that is, "close to" and "even closer to".

[The Jargon File]

(2000-08-02)

Regards,

Rich Heilman

raymond_giuseppi · ‎2007 Sep 11

(1) Fourth letter of greek alphabet

(2) Mode of extraction in BW

With delta extraction, only the data that has changed since the last extraction is loaded into the BW. Data that has already been loaded and has not changed is not extracted and does not need to be deleted before a new load. This improves performance compared with periodic extraction of the entire dataset.

Regards