Difference between revisions of "Glossary"
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(Expand the glossary a bit) |
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== C == | == C == | ||
; Content | ; Content | ||
| − | : a file stored in the archive, identified by its cryptographic hashes (SHA1, "git-like" SHA1, SHA256) and its size | + | : a (specific version of a) file stored in the archive, identified by its cryptographic hashes (SHA1, [https://git-scm.com/book/en/v2/Git-Internals-Git-Objects "git-like" SHA1], SHA256) and its size |
; Cryptographic hash | ; Cryptographic hash | ||
| − | : | + | : a fixed-size "summary" of a stream of bytes that is easy to compute, and hard to reverse. ([https://en.wikipedia.org/wiki/Cryptographic_hash_function Cryptographic hash function Wikipedia article]) |
| + | : also known as: Checksum, Digest | ||
== D == | == D == | ||
; Directory | ; Directory | ||
| − | : a set of named pointers to | + | : a set of named pointers to contents (file entries), directories (directory entries) and revisions (revision entries) |
== H == | == H == | ||
| Line 21: | Line 22: | ||
; Origin | ; Origin | ||
| − | : | + | : a location from which a coherent set of sources has been obtained. |
| − | : | + | : Also known as: Data source |
| + | : Examples: | ||
: | : | ||
| − | :* a [https://github.com/torvalds/linux/ | + | :* a [https://github.com/torvalds/linux/ Git repository] |
:* a [https://www.kernel.org/pub/linux/kernel/v4.x/ directory containing tarballs] | :* a [https://www.kernel.org/pub/linux/kernel/v4.x/ directory containing tarballs] | ||
:* the history of a Debian package on [http://snapshot.debian.org/package/linux/ snapshot.debian.org]. | :* the history of a Debian package on [http://snapshot.debian.org/package/linux/ snapshot.debian.org]. | ||
| Line 31: | Line 33: | ||
; Project | ; Project | ||
| − | : | + | : an organized effort to develop a software product. Projects might be nested following organizational structures (sub-project, sub-sub-project), are associated to a number of human-meaningful metadata, and release software products via Origins. |
== R == | == R == | ||
| Line 37: | Line 39: | ||
; Release | ; Release | ||
: a revision that has been marked by a project as noteworthy with a specific, usually mnemonic, name (for instance, a version number). | : a revision that has been marked by a project as noteworthy with a specific, usually mnemonic, name (for instance, a version number). | ||
| − | : | + | : Also known as: Tag (Git-specific terminology) |
| + | : Examples: | ||
: | : | ||
| − | :* a | + | :* a Git tag with its name |
:* a tarball with its name | :* a tarball with its name | ||
:* a Debian source package with its version number. | :* a Debian source package with its version number. | ||
| Line 45: | Line 48: | ||
; Revision | ; Revision | ||
: a "point in time" snapshot in the development history of a project. | : a "point in time" snapshot in the development history of a project. | ||
| − | : | + | : Also known as: Commit (VCS terminology) |
| + | : Examples: | ||
: | : | ||
| − | :* a | + | :* a Git commit |
== S == | == S == | ||
| Line 57: | Line 61: | ||
; VCS | ; VCS | ||
| − | : | + | : acronym for Version Control System |
| + | : Examples: Git, Subversion, Mercurial | ||
Revision as of 18:58, 25 June 2016
This glossary contains the definition of common terms used in the Software Heritage project.
C
- Content
- a (specific version of a) file stored in the archive, identified by its cryptographic hashes (SHA1, "git-like" SHA1, SHA256) and its size
- Cryptographic hash
- a fixed-size "summary" of a stream of bytes that is easy to compute, and hard to reverse. (Cryptographic hash function Wikipedia article)
- also known as: Checksum, Digest
D
- Directory
- a set of named pointers to contents (file entries), directories (directory entries) and revisions (revision entries)
H
- Hash
- see Cryptographic hash
O
- Origin
- a location from which a coherent set of sources has been obtained.
- Also known as: Data source
- Examples:
-
- a Git repository
- a directory containing tarballs
- the history of a Debian package on snapshot.debian.org.
P
- Project
- an organized effort to develop a software product. Projects might be nested following organizational structures (sub-project, sub-sub-project), are associated to a number of human-meaningful metadata, and release software products via Origins.
R
- Release
- a revision that has been marked by a project as noteworthy with a specific, usually mnemonic, name (for instance, a version number).
- Also known as: Tag (Git-specific terminology)
- Examples:
-
- a Git tag with its name
- a tarball with its name
- a Debian source package with its version number.
- Revision
- a "point in time" snapshot in the development history of a project.
- Also known as: Commit (VCS terminology)
- Examples:
-
- a Git commit
S
- SHA
- (Secure Hash Algorithm) a family of Cryptographic hashes published by the NIST (SHA Wikipedia article)
V
- VCS
- acronym for Version Control System
- Examples: Git, Subversion, Mercurial