腾讯面试：MySQL事务与MVCC如何实现的隔离级别？ .font_s.ios.pgcarticle

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.article-literature.pgc-end-literature,.font_xl.pgc article .article-source.pgc-end-source{font-size:20px!important}.font_s.pgc article .article-literature.pgc-end-literature span,.font_s.pgc article .article-source.pgc-end-source span{font-size:13px!important}.font_m.pgc article .article-literature.pgc-end-literature span,.font_m.pgc article .article-source.pgc-end-source span{font-size:15px!important}.font_l.pgc article .article-literature.pgc-end-literature span,.font_l.pgc article .article-source.pgc-end-source span{font-size:17px!important}.font_xl.pgc article .article-literature.pgc-end-literature span,.font_xl.pgc article .article-source.pgc-end-source span{font-size:20px!important}.font_s.pgc article p{margin-top:16px!important;margin-bottom:16px!important;margin-left:0!important;margin-right:0!important}.font_m.pgc article p,.pgc article p{margin-top:18px!important;margin-bottom:18px!important;margin-left:0!important;margin-right:0!important}.font_l.pgc article p{margin-top:20px!important;margin-bottom:20px!important;margin-left:0!important;margin-right:0!important}.font_xl.pgc article p{margin-top:23px!important;margin-bottom:23px!important;margin-left:0!important;margin-right:0!important}.pgc article p:first-child{margin-top:0!important}.pgc article blockquote>p:first-child{margin-top:0!important}.pgc article blockquote>p:last-child{margin-bottom:0!important}.pgc article blockquote li:first-child p{margin-top:0!important}.pgc article blockquote li:last-child p{margin-bottom:0!important}前言其实数据库章节基本上的知识点我都写过一遍了，包括这篇事务和MVCC的，但是国庆期间我翻阅资料的时候我发现之前写的还差点意思，例子举得也差点意思，那我就根据我自己最新的理解，加上之前的总结相当于重写了，希望你也有新的收获。
数据库事务介绍事务的四大特性（ACID）