模式演进管理器「Schema Evolution Manager（sem）」

Schema Evolution Manager 可让工程师轻松对 postgresql 数据库进行模式变更，并将模式变更作为源代码进行管理。模式变更以 gzip 压缩包的形式部署，并以相应的 git 标签命名。「Schema Evolution Manager makes it very simple for engineers to contribute schema changes to a postgresql database, managing the schema evolutions as proper source code. Schema changes are deployed as gzipped tarballs named with the corresponding git tag.」