一.定义说明 oracle数据库中,存在多种对象,最常见的表和索引,索引的目的是为了加快查询:oracle建议一个表>2g时,就建议进行分区,分区表的好处此处省略,分区表有维护操作,但是某些维护操作对整个表的索引维护造成巨大开销,因此本地索引就是解决分区表管理的问题. 非分区索引创建方式,create index index_name on table_name(column_name); 查询索引状态从dba_indexes->status列查询 全局分区索引创建,create index …
HTML5 web storage, a better local storage than cookies. With HTML5, web pages can store data locally within the user's browser. Earlier, this was done with cookies. However, Web Storage is more secure and faster. The data is not included with every s…