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diff --git a/usth/ICT2.7/P1L4 Version Control Subtitles/3 - Version Control System Introduction - lang_en_vs5.srt b/usth/ICT2.7/P1L4 Version Control Subtitles/3 - Version Control System Introduction - lang_en_vs5.srt deleted file mode 100644 index be0515b..0000000 --- a/usth/ICT2.7/P1L4 Version Control Subtitles/3 - Version Control System Introduction - lang_en_vs5.srt +++ /dev/null @@ -1,207 +0,0 @@ -1 -00:00:00,160 --> 00:00:02,080 -So first of all, what is a version - -2 -00:00:02,080 --> 00:00:05,550 -control system? A version control system or VCS, - -3 -00:00:05,550 --> 00:00:07,670 -is a system that allows you to manage - -4 -00:00:07,670 --> 00:00:11,180 -multiple revisions of the same unit of information. For - -5 -00:00:11,180 --> 00:00:14,330 -example of documents, of source files or any - -6 -00:00:14,330 --> 00:00:17,380 -other item of that sort. And as the graphical - -7 -00:00:17,380 --> 00:00:21,240 -depiction shows, a VCS allows a multiple actors. - -8 -00:00:21,240 --> 00:00:25,020 -Here we have four, to cooperate and share files. - -9 -00:00:25,020 --> 00:00:26,980 -Now, let's drill into this concept in a little - -10 -00:00:26,980 --> 00:00:29,720 -more detail. And let's do that by discussing why - -11 -00:00:29,720 --> 00:00:32,870 -is VCS useful, especially in the context of software - -12 -00:00:32,870 --> 00:00:35,790 -engineering and of software development. So first of all, - -13 -00:00:35,790 --> 00:00:39,570 -using a version control system enforces discipline, because it - -14 -00:00:39,570 --> 00:00:43,030 -manages the process by which the control of items - -15 -00:00:43,030 --> 00:00:46,720 -passes from one person to another. Another important aspect - -16 -00:00:46,720 --> 00:00:51,170 -of VCS is that it allows you for archiving versions. - -17 -00:00:51,170 --> 00:00:54,330 -So you can store subsequent versions of source controlled - -18 -00:00:54,330 --> 00:00:57,450 -items into a VCS. And not only you can - -19 -00:00:57,450 --> 00:01:00,450 -store versions, you can also maintain a lot of - -20 -00:01:00,450 --> 00:01:03,480 -interesting and important historical information - -21 -00:01:03,480 --> 00:01:05,810 -about these versions. For example, - -22 -00:01:05,810 --> 00:01:08,070 -a VCL will store information such as, who is - -23 -00:01:08,070 --> 00:01:11,270 -the author for this specific version stored in the system. - -24 -00:01:11,270 --> 00:01:13,820 -Or, for another example, on what day and what - -25 -00:01:13,820 --> 00:01:16,260 -time that version was stored. And a lot of other - -26 -00:01:16,260 --> 00:01:19,240 -interesting information about the specific version of the - -27 -00:01:19,240 --> 00:01:21,600 -item. Information that you can then retrieve and for - -28 -00:01:21,600 --> 00:01:25,040 -example, use to compare versions. Obviously, the fact of - -29 -00:01:25,040 --> 00:01:27,970 -having a central repository in which all these items - -30 -00:01:27,970 --> 00:01:31,350 -are stored enables collaboration, so people can more easily - -31 -00:01:31,350 --> 00:01:35,510 -share data, share files, share documents through the use - -32 -00:01:35,510 --> 00:01:37,950 -of VCS. And I'm sure that you all had - -33 -00:01:37,950 --> 00:01:41,320 -the experience of deleting a file by mistake or - -34 -00:01:41,320 --> 00:01:43,860 -modifying a file in the wrong way, or in the - -35 -00:01:43,860 --> 00:01:47,830 -most common case of changing something in your code for instance. - -36 -00:01:47,830 --> 00:01:50,490 -And breaking something and not being able to go back - -37 -00:01:50,490 --> 00:01:53,630 -to a version that was working. Not remembering, for example, what - -38 -00:01:53,630 --> 00:01:56,130 -is that you changed that broke the code. In all - -39 -00:01:56,130 --> 00:01:59,850 -these cases a version control system can be extremely useful because - -40 -00:01:59,850 --> 00:02:03,330 -it will allow you to recover from this accidental deletions - -41 -00:02:03,330 --> 00:02:06,690 -or edits. And for example, to go back of yesterdays version - -42 -00:02:06,690 --> 00:02:09,949 -that was working perfectly, and also to compare, for example, yesterdays - -43 -00:02:09,949 --> 00:02:12,920 -version with today version and see what is that you changed. - -44 -00:02:12,920 --> 00:02:16,000 -Finally, a version control system will normally also allow you to - -45 -00:02:16,000 --> 00:02:20,460 -conserve and save disk space on both the source control client - -46 -00:02:20,460 --> 00:02:23,880 -and on the server. Why? Well, for instance because it's centralizing - -47 -00:02:23,880 --> 00:02:26,570 -the management of the version. So instead of having many copies - -48 -00:02:26,570 --> 00:02:29,480 -spread around, you'll have only one central point where these copies - -49 -00:02:29,480 --> 00:02:32,240 -are stored or a few points where these copies are stored. - -50 -00:02:32,240 --> 00:02:34,330 -In addition, version control system often - -51 -00:02:34,330 --> 00:02:37,470 -uses efficient algorithms to store these changes. - -52 -00:02:37,470 --> 00:02:41,310 -And therefore, you can keep many versions without taking up too much space. |