title: How to perform better document version control on Excel files and SQL schema files
body: <p>I am in charge of several Excel files and SQL schema files. How should I perform better document version control on these files?</p>
  
  <p>I need to know the part modified (different part) in these files and keep all the versions for reference. Currently I am appending the time stamp on the file name, but I found it seemed to be inefficient.</p>
  
  <p>Is there a way or good practice to do better document version control?</p>
  
  <p>By the way, editors send me the files via email.</p>