Sequelize 3.20.0 发布了，Sequelize.js 提供对 MySQL，MariaDB，SQLite 和 PostgreSQL 数据库的简单访问，通过映射数据库条目到对象，或者对象到数据库条目。简而言之，就是 ORM（Object-Relational-Mapper）。Sequelize.js 完全是使用 JavaScript 编写，适用于 Node.js 的环境。
更新日志：
[ADDED] rejectOnEmpty mode #272 #5480
[ADDED] beforeCount hook #5209
[ADDED] validationFailed hook #1626
[ADDED] Support for IEEE floating point literals in postgres and sqlite #5194
[FIXED] addColumn with reference in mysql #5592
[FIXED] findAndCountAll generates invalid SQL, subQuery moves to LEFT OUTER JOIN #5445
[FIXED] count methods pollute the options.includes #4191
[FIXED] Invalid SQL generated when using group option along with attributes #3009
[FIXED] Mark index as unique: true when type: 'UNIQUE'. Fixes #5351
[FIXED] Improper escaping of bound arrays of strings on Postgres, SQLite, and Microsoft SQL Server
软件详情：https://github.com/sequelize/sequelize/releases
来自:开源中国社区
