数据操作语言 meaning in English
data manipulation language dml
database manipulation language
datamanipulationlanguagedml
dml data manipulation language
Examples
- Mdx provides data definition language statements ; data manipulation language statements ; scripting language statements for managing scope , context , and control of flow within mdx scripts ; operators and functions for the manipulation of data retrieved from multidimensional objects ; and the capability to extend mdx with user - defined functions
Mdx提供了数据定义语言( ddl )语句，数据操作语言( dml )语句，用于管理mdx脚本中的作用域、上下文和流控制的脚本语言语句，用于操作从多维对象检索的数据的运算符和函数，以及通过用户定义函数来扩展mdx的能力。 - In addition to supporting triggers that are fired by data manipulation language statements that modify data insert , update , and delete , the database engine includes a new class of triggers fired by ddl statements that modify database objects , such as the statements that start with create , alter , or drop
除了对修改数据的数据操作语言语句（ insert 、 update和delete ）所激发的触发器提供支持外，数据库引擎还包括一类新的触发器，由修改数据库对象的ddl语句（如以create 、 alter或drop开头的语句）激发。 - The combination of the subtree - based storage model with the document - based to ensure the efficiency and integrality of the data retrieval for all sorts of heterogeneous and context mixed data to the fullest extent ; 2 . dynamically branching and merging combined with the data mapping mechanism , supports the xml document efficiently and can improve the operation capability of the system to some extent ; 3 . referring to the characteristic of xquery , it presents a new operation language for xml data , xqul , which supports the query operation as well as the update operation on xml ; 4
本文提出了一套较为通用的非结构化信息的nativexml文档存储访问策略和实现方案作为对非结构化信息存取机制研究的探索和尝试,主要包括下列理论及技术: 1 .基于子树和基于文档的存储模式相结合,以最大程度保证底层各类形式异构和内容混杂的数据存取的有效性和完整性; 2 .动态分枝合成技术和数据映像机制的引入,实现对xml文档的有效支持,并在一定程度上提高系统处理性能; 3 .结合xquery查询语言特点,提出一种新型xml数据操作语言xqul ,支持xml数据的查询以及更新操作; 4 .三种索引(文档索引、结构索引、值索引)的建立,为xml数据提供从站点到文档,从文档到元素的多级访问策略。