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    • 8. 发明授权
    • Transactional control of RDBMS database definition language operations
    • RDBMS数据库定义语言操作的事务控制
    • US09372855B1
    • 2016-06-21
    • US13477169
    • 2012-05-22
    • James C. Petts
    • James C. Petts
    • G06F17/30
    • G06F17/30008G06F17/30371
    • Database Definition Language (DDL) transactions are defined that include one or more DDL operations that are to be executed to modify aspects of a relational database, such as its structure. If performance of one or more of the DDL operations in a DDL transaction fails, then the changes made to the relational database by some or all of the DDL operations may be reversed. Instructions and state information may be generated and stored prior to, during, and/or following the execution of a DDL operation that may be utilized to reverse the changes to a relational database made by the DDL operations. User interfaces might also be provided for defining, selecting, editing, and executing DDL transactions, and for providing information relating to the execution and rollback of DDL operations in a DDL transaction.
    • 定义数据库定义语言(DDL)事务,其中包括要执行的一个或多个DDL操作,以修改关系数据库的各个方面,例如其结构。 如果在DDL事务中执行一个或多个DDL操作失败,则某些或所有DDL操作对关系数据库的更改可能会相反。 指令和状态信息可以在执行DDL操作之前,期间和/或之后被生成和存储,DDL操作可以用于逆转由DDL操作产生的关系数据库的改变。 还可以提供用户界面来定义,选择,编辑和执行DDL事务,并提供与DDL事务中DDL操作的执行和回滚有关的信息。