Source Control

Oops I lost my data :(
I think this is the worst word in IT field.
We work here in spotlocal to never hear these words by using source control application (svn).

This image show revision number 1000 done by Amir our technical manager last Thursday :).

Revision control (also known as version control (system) (VCS), source control or (source) code management (SCM)) is the management of multiple revisions of the same unit of information. It is most commonly used in engineering and software development to manage ongoing development of digital documents like application source code, art resources such as blueprints or electronic models and other critical information that may be worked on by a team of people.

Changes to these documents are identified by incrementing an associated number or letter code, termed the "revision number", "revision level", or simply "revision" and associated historically with the person making the change. A simple form of revision control, for example, has the initial issue of a drawing assigned the revision number "1". When the first change is made, the revision number is incremented to "2" and so on.

Standalone version control systems mostly come from the software engineering industry, but revision control is also embedded in various types of software like word processors (e.g. MSWord, OOwriter, Koffice), spreadsheets (e.g. OOcalc), in various content management systems. Integrated revision control is a key feature of wiki software packages such as MediaWiki, TWiki, etc. In wikis, revision control allows for the ability to revert a page to a previous revision, which is critical for defending a public wiki against vandalism and spam, to allow legitimate users to correct their mistakes, and to allow groups of editors to track each other's edits.


References:
wikipedia