Difference between revisions of "Glossary"

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This glossary contains the definition of common terms used in the Software Heritage project.
 
This glossary contains the definition of common terms used in the Software Heritage project.
  
 +
== C ==
 
; Content
 
; Content
: a file stored in the archive.
+
: a file stored in the archive, identified by its cryptographic hashes (SHA1, "git-like" SHA1, SHA256) and its size
 +
 
 +
; Cryptographic hash
 +
: (also called Checksum, Digest) 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])
 +
 
 +
== D ==
  
 
; Directory
 
; Directory
 +
: a set of named pointers to files, directories and revisions
 +
 +
== H ==
 +
 +
; Hash
 +
: see Cryptographic hash
 +
 +
== O ==
 +
 +
; Origin
 +
: (also called Data sources) a location from which a coherent set of sources has been obtained.
 +
: Some examples of origins :
 
:
 
:
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:* a [https://github.com/torvalds/linux/ git repository]
 +
:* a [https://www.kernel.org/pub/linux/kernel/v4.x/ directory containing tarballs]
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:* the history of a Debian package on [http://snapshot.debian.org/package/linux/ snapshot.debian.org].
  
; Origin
+
== P ==
: a location from which a coherent set of sources has been obtained.
 
  
 
; Project
 
; Project
 
:
 
:
 +
 +
== R ==
  
 
; Release
 
; Release
 +
: a revision that has been marked by a project as noteworthy with a specific, usually mnemonic, name (for instance, a version number).
 +
: Some examples of releases :
 
:
 
:
 +
:* a git tag with its name
 +
:* a tarball with its name
 +
:* a Debian source package with its version number.
  
 
; Revision
 
; Revision
 +
: a "point in time" snapshot in the development history of a project.
 +
: Some examples of revisions :
 
:
 
:
 +
:* a git commit
 +
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== S ==
 +
 +
; SHA
 +
: (Secure Hash Algorithm) a family of Cryptographic hashes published by the NIST ([https://en.wikipedia.org/wiki/Secure_Hash_Algorithm SHA Wikipedia article])
 +
 +
== V ==
  
 
; VCS
 
; VCS
: a Version Control System, like git, svn or hg
+
: a Version Control System, like git, subversion or mercurial

Revision as of 15:18, 10 June 2016

This glossary contains the definition of common terms used in the Software Heritage project.

Contents

C

Content
a file stored in the archive, identified by its cryptographic hashes (SHA1, "git-like" SHA1, SHA256) and its size
Cryptographic hash
(also called Checksum, Digest) a fixed-size "summary" of a stream of bytes, that is easy to compute, and hard to reverse. (Cryptographic hash function Wikipedia article)

D

Directory
a set of named pointers to files, directories and revisions

H

Hash
see Cryptographic hash

O

Origin
(also called Data sources) a location from which a coherent set of sources has been obtained.
Some examples of origins :

P

Project

R

Release
a revision that has been marked by a project as noteworthy with a specific, usually mnemonic, name (for instance, a version number).
Some examples of releases :
  • 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.
Some examples of revisions :
  • a git commit

S

SHA
(Secure Hash Algorithm) a family of Cryptographic hashes published by the NIST (SHA Wikipedia article)

V

VCS
a Version Control System, like git, subversion or mercurial