The example in Listing 11 connects to a local database named ldb, sets savepoints, performs operations on remote databases, and rolls back to a savepoint.
清单11中的示例连接到一个名为ldb 的本地数据库，设置保存点并在远程数据库上执行操作，然后回滚到保存点。
Study on Extraction Technology of Total Flavonoids Contents in Tamarix elongate Ldb.
长穗柽柳；总黄酮；分光光度法；提取工艺。
In multidatabase, access to global view will be decomposed to several sub-operations to several LDB, and perhaps also need data schema translation and query processing.
在多库系统中，对全局视图的存取操作要分解为针对多个LDB的子操作，可能还要对数据模式及查询语言进行转换。
The author gains insights from attribute reduction based on discernability matrix and proposes a few rough-set based text feature selection algorithms, i. e. , DB1, DB2 and LDB.
作者从基于分辨矩阵的粗糙集属性约简中受到启发，提出了一系列基于粗集理论的文本特征选择算法，即DB1、DB2、LDB。
The author gains insights from attribute reduction based on discernability matrix and proposes a few rough-set based text feature selection algorithms, i. e. , DB1, DB2 and LDB.
作者从基于分辨矩阵的粗糙集属性约简中受到启发，提出了一系列基于粗集理论的文本特征选择算法，即DB1、DB2、LDB。
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