Lesson plan

PVCS

PVCS Version Manager (originally named Polytron Version Control System) is a software package by Serena Software Inc., for version control of source code files. PVCS follows the "locking" approach to concurrency control; it has no merge operator built-in (but does, nonetheless, have a separate merge command). However PVCS can also be configured to support several users simultaneously attempting to edit the file; in this case the second chronological committer will have a branch created for them so that both modifications, instead of conflicting, will appear as parallel histories for the same file. This is unlike Concurrent Versions System (CVS) and Subversion where the second committer needs to first merge the changes via the update command and then resolve conflicts (when they exist) before actually committing. Originally developed by Don Kinzer and published by Polytron in 1985, through a history of acquisitions and mergers, the product was at times owned by Sage Software of Rockville (1989), Maryland (unrelated to Sage Software of the UK), Intersolv 1992, Micro Focus International 1998 and Merant PLC 2001. The latter was acquired by Serena Software in 2004, which was then acquired by Silver Lake Partners in 2006.…

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Article summary

PVCS Version Manager (originally named Polytron Version Control System) is a software package by Serena Software Inc., for version control of source code files. PVCS follows the "locking" approach to concurrency control; it has no merge operator built-in (but does, nonetheless, have a separate merge command). However PVCS can also be configured to support several users simultaneously attempting to edit the file; in this case the second chronological committer will have a branch created for them so that both modifications, instead of conflicting, will appear as parallel histories for the same file. This is unlike Concurrent Versions System (CVS) and Subversion where the second committer needs to first merge the changes via the update command and then resolve conflicts (when they exist) before actually committing. Originally developed by Don Kinzer and published by Polytron in 1985, through a history of acquisitions and mergers, the product was at times owned by Sage Software of Rockville (1989), Maryland (unrelated to Sage Software of the UK), Intersolv 1992, Micro Focus International 1998 and Merant PLC 2001. The latter was acquired by Serena Software in 2004, which was then acquired by Silver Lake Partners in 2006.…

Key claims

  1. publication date: 1985 — source: Wikipedia · confidence 0.95

Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. The record states that the publication date is "1985". What evidence would count against this claim?
  3. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  4. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

  1. Wikipedia https://en.wikipedia.org/w/index.php?oldid=1350534592

Key claims and bibliography are generated from the same tracked claims and sources as the article page.