PL/SQL 基础 ( 下 ) 1. PL/SQL中的 SQL语句 - END语句与COMMIT等内容,没有任何关系. - PL/SQL does not directly support data definition language( DDL ) statements, such as CREATE TA BLE, ALTER TABLE, or DROP TABLE. - PL/SQL does not support data control language( DCL ) sta
MySQL 事务基础概念/Definition of Transaction 事务(Transaction)是访问和更新数据库的程序执行单元;事务中可能包含一个或多个 sql 语句,这些语句要么都执行,要么都不执行. 事务处理在各种管理系统中都有着广泛的应用,比如人员管理系统,很多同步数据库操作大都需要用到事务处理.比如说,在人员管理系统中,你删除一个人员,你即需要删除人员的基本资料,也要删除和该人员相关的信息,如信箱,文章等等,这样,这些数据库操作语句就构成一个事务! 删除的SQL语句 del
http://skeletoncoder.blogspot.com/2006/10/jdbc-tutorials-commit-or-rollback.html JDBC Tutorials: Commit or Rollback transaction in finally block In most of JDBC books, the transaction management idiom that is followed is, after executing the update s
Data play an important part in our project,how can we ensure correctness of the data and prevent the data from error.In relational database, we are famillar with the usage of transaction. begin opreations commit/rollback But there are some difference