schema.xml schema.xml是最主要的配置项，我们将users用户表按照取模的方式平均拆分到了MySQL A和MySQL B两个数据数据库实例上， 详细请看配置文件： 参数说明 **** 本内容被作者隐藏 **** ...

解决方案1： 不宜超过80%,除非你表空间内的表数据都是完全连续存储的。 解决方案2： 设成可自动拓展的，就不用管这些了 1、查询表空间使用情况 2、查询表空间的总容量 3、查询表空间使用率 ...

**** 本内容被作者隐藏 **** 点此浏览《数据库免费视频教程》完整版

which three statements are true regarding single row subqueries? A. THEY CAN BE USED in the where clause. B. A SQL STATEMENT MAY HAVE MULTIPLE SINGLE ROW SUBQUERY BLOCKS. C. THEY MUST BE PLACED ON THE ...

Which two statements are true about truncate and delete? A. the result of a delete can be undone by issuing a rollback B. delete can use a where clause to determine which row(s) should be removed. C. ...

Which three statements are true about Structured Query Language (SQL)? A. It guarantees atomicity, consistency, isolation, and durability (ACID) features B. It best supports relational databases C. It ...

Examine the description of the PRODUCTS table: Name Null? Type PROD_ID NOT NULL NUMBER(2) QTY ...

Examine the description of the BOOKS table: Name Null? Type TRANSACTION_ID NOT NULL VARCHAR2(6) ...