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。
For example , you could expose the event data schema in your subscription management interface , and allow subscribers to create their own search conditions over this data , such as 例如,您可以在订阅管理界面中完全公开事件数据架构,并允许订阅方基于此数据来创建他们自己的搜索条件,例如
Because session - state store providers store session information uniquely for each application , you must ensure that your data schema , queries , and updates include the application name 由于会话状态存储提供程序为每个应用程序单独存储会话信息,因此需要确保数据架构、查询和更新包括应用程序名称。
Make sure the data aggregation tables are relatively isolated from the rest of warehouse data schema , so the business requirement changes of the reporting will not affect the basic data warehouse data structure 请确保数据聚集表与其余的仓库数据模式相对分隔,因此,报表的业务需求修改将不影响基本的数据仓库数据结构。
2 ) semantic description methods based on metadata we construct a semantic model of metadata to describe attributes characters . the model includes data schema and data content statistic 2 )基于元数据的语义描述方法以数据库元数据为基础,建立数学模型,用于描述数据库对象的语义特征,涉及范围包括数据模式和数据内容统计。
In fact , the world wide web is such a thing : anything that has a uri is considered to be " on the web . " every data object and every data schema model in the semantic web must have a unique uri 实际上,万维网就是这样的:任何拥有uri的事物都被认为是“在web上” 。语义web中的每个数据对象和每个数据模式/模型都必须拥有惟一的uri 。
You can expose the data embedded in an office document to asp . net server pages without starting the relevant office application by creating a document and associating a data schema with that document 创建office文档并将数据架构与该文档关联之后,就可以向asp . net服务器页面公开该office文档中嵌入的数据,而无需启动相关的office应用程序。
Because role providers store role information uniquely for each application , you will need to ensure that your data schema includes the application name and that queries and updates also include the application name 因为角色提供程序单独为每个应用程序存储角色信息,所以需要确保数据架构包含应用程序名,并确保查询和更新也包含应用程序名。
Because membership providers store user information uniquely for each application , you will need to ensure that your data schema includes the application name and that queries and updates also include the application name 因为成员资格提供程序为每个应用程序单独存储用户信息,所以需要确保数据架构包含应用程序名,并确保查询和更新也包含应用程序名。
We must get the data schemas of every system , and the approach of extracting the data from every system is different . the work is hard , and the data schema is the core technology , you ca n ' t get it freely 这一过程需要知道各个异构系统的数据模式,根据不同的数据模式制定数据抽取的方法;这样不但工作量大,而且涉及其他公司的核心技术信息的问题。