what is SCM terminolgy?

Version

• A SW CI having a defined set of functional capabilities.

Revisions

• Changes to a version to correct only errors in design logic but does not affect documented functional capabilities since none of the requirements have changed.

Variants

• A variation of a version developed to run on different types of HW, or to provide slightly different facilities for different users.

Examples

versions goes like that
1.1->1.2->1.3->1.4

variants (branching versions)

1.1->1.2->1.3->1.4

*1.3->1.3.1.1->1.3.1.2

Merging

• Two diverging versions may be merged to create a single new version combining both set of change requests.

• Merge operations are typically done interactively with tool assistance

Promotion of a CI

• A CI may be promoted from one developmental baseline to another to signify a change in a CI’s internal development state.

Release

• A Release is used to designate certain promotions of CI’s that are distributed outside the development organization.