Version Control Roman Kontchakov Birkbeck, University of London - PowerPoint PPT Presentation

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Information Systems Concepts Version Control Roman Kontchakov Birkbeck, University of London Version Control A Version Control System (VCS) lets you track your files over time Also known as Revision Control Source Control

Information Systems Concepts Version Control Roman Kontchakov Birkbeck, University of London
Version Control  A Version Control System (VCS) lets you track your files over time  Also known as  Revision Control  Source Control  (Source) Code Management
Why do you care? Have you ever saved a file, and then wanted to revert the  changes you made? Have you ever wished you could see what a file looked like some time ago? Do you work in a team? Has it ever happened that you were  working on a file, and someone else was working on the same file at the same time? Did you lose your changes to that file because of that? Have you ever found a bug in your project and wanted to know  when (and how) that bug got into your files? --- Version Control with Subversion .
A Poor Man's Version Control System  A Poor Man’s VCS  Make a single backup copy (Document.bak).  If we’re clever, we add a version number or date : Document_V1.txt, DocumentMarch2007.txt  We may even use a shared folder so other people can see and edit files without sending them over email. Hopefully they re-label the file after they save it.  Does this work for a large-scale development project?
Version Control  Central (Client/Server) Model  Concurrent Versions System (CVS)  Apache Subversion (SVN)  …  Distributed Model  Mercurial  Git  …
Client/Server Version Control System --- Version Control with Subversion .
VCS: The Problem to Avoid --- Version Control with Subversion .
VCS: Lock-Modify-Unlock Solution --- Version Control with Subversion .
VCS: Copy-Modify-Merge Solution (1) --- Version Control with Subversion .
VCS: Copy-Modify-Merge Solution (2) --- Version Control with Subversion .
--- A Visual Guide to Version Control .
--- A Visual Guide to Version Control .
Most VCS store diffs rather than full copies of the file. What’s the diff from r1 to r4? --- A Visual Guide to Version Control .
--- A Visual Guide to Version Control .
--- A Visual Guide to Version Control .
--- A Visual Guide to Version Control .
--- A Visual Guide to Version Control .
Reverse Integration (RI) and Forward Integration (FI) --- A Visual Guide to Version Control .

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