无人自助棋牌室真能赚钱吗
MongoDB 3.3.5 和 3.2.6-rc0 发布了,MongoDB 是一个介于关系数据库和非关系数据库之间的产品,是非关系数据库当中功能最丰富,最像关系数据库的。他支持的数据结构非常松散,是类似json的 bjson格式,因此可以存储比较复杂的数据类型。Mongo最大的特点是他支持的查询语言非常强大,其语法有点类似于面向对象的查询语言,几乎可以实现 类似关系数据库单表查询的绝大部分功能,而且还支持对数据建立索引。
MongoDB 3.3.5改进记录如下:
- SERVER-6823 Enable Access control without downtime
- SERVER-10689 Add a $switch expression
- SERVER-17258 Add $reduce expression operator for rollup of arrays
- SERVER-20224 Commands which write should take a write concern
- SERVER-23271 Add metrics to track index key additions and deletions for all CRUD ops/commands
- SERVER-23358 Upgrade SpiderMonkey to 45.0.2 ESR
- SERVER-23391 Improve behavior when running under WiredTiger on machines with little memory
- SERVER-22970 Background index contains mismatched index keys and documents
- SERVER-22043 count helper doesn’t apply read preference
- SERVER-23394 AuthorizationManager may deadlock while building role graph if profiling is enabled
- SERVER-23766 Remove beta startup warning for inMemory storage engine
下载地址:http://www.mongodb.org/downloads