1. Version Modeling
a. File Sharing
b. Lock-Modify-Unlock
c. Copy-Modify-Merge
2. 基于Diff
diff可以理解为一堆修改的集合
3. Diff的格式
diff记录了增加、删除
diff算法基础是最长公共子串LCS
4. 工作流程
a. Update
svn update
b. Change
svn add(delete,copy,move)
c. Examine
svn status(diff)
d. Possibly Undo
svn revert
e. Resolve conflicts(merge others' changes)
svn update
svn resolved
f. Commit
svn commit [-n "修改了内存泄露"]
提交说明要说明目的，结果， 如：增加一个文件，删除一个文件这些都是不好的提交说明