从事数据库开发或管理的人员,无论使用MySQL、Oracle等何种数据库,都期望其具备内置的统计信息功能,以便更高效地进行数据管理和性能优化。 1、 连接数据库后,进入information_schema实例,选择表选项,右侧对象列表中即可查看名为Tables的数据表。 2、 选择 ...
有过 MySQL 使用经验的人应该知道,MySQL 要想在线修改个 Schema 结构是个麻烦事,规模不大的表增加个索引造成的锁也可能导致整个 Web 应用宕机。这一点没办法和 Oracle RDBMS 、DB2 等商业数据库相比,甚至 PostgreSQL 也具备联机 DML 的能力。我在过去写过一系列并不 ...
Database tools provider Tokutek has updated its MySQL storage engine to support live updating of schemas, the company announced Wednesday. Taking a database offline to update the schema can be too ...
For a Java developer, Hibernate 3 annotations offer a terrific way to model the domain layer. Without much effort, you can get Hibernate to generate your database schema automatically, dispensing ...
For database administrators (DBAs), keeping databases running at peak performance can be a little like spinning plates: It takes agility, concentration, quick reactions, a cool head, and an occasional ...