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    • 1. 发明授权
    • Method and system for transactional fingerprinting in a database system
    • 数据库系统中事务指纹识别的方法和系统
    • US08122035B2
    • 2012-02-21
    • US11168714
    • 2005-06-28
    • Edward T. ChildressRhonda L. ChildressDavid B. KumhyrNeil Pennell
    • Edward T. ChildressRhonda L. ChildressDavid B. KumhyrNeil Pennell
    • G06F7/00
    • G06F17/30448G06Q20/10
    • Transactions with respect to database operations are fingerprinted by associating transaction identifiers with logged information about those database operations. An SQL query is obtained prior to its evaluation by a database engine. A transaction identifier to be associated with the SQL query is also obtained. The SQL query is then modified to generate a modified SQL query, wherein the modified SQL query includes a WHERE clause that contains an expression that always evaluates to a logical true value, and wherein the expression contains the transaction identifier. The modified SQL query is then sent to the database engine for evaluation within the data processing system. When the processing of the modified SQL query is logged with a copy of the modified SQL query, the logged information contains a copy of the transaction identifier.
    • 关于数据库操作的事务通过将事务标识符与关于这些数据库操作的记录信息相关联来进行指纹。 在数据库引擎评估之前,获得SQL查询。 还将获得与SQL查询相关联的事务标识符。 然后修改SQL查询以生成修改的SQL查询,其中修改的SQL查询包括一个WHERE子句,其中包含总是计算为逻辑真值的表达式,其中表达式包含事务标识符。 然后将修改的SQL查询发送到数据库引擎,以在数据处理系统中进行评估。 当修改的SQL查询的处理与修改的SQL查询的副本一起记录时,记录的信息包含事务标识符的副本。