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- This separation of access criteria from physical storage characteristics is called physical data independence. 从物理存储特征中分离出访问标准叫作物理数据独立性。
- physical data independence 数据实际结构独立性
- These are versions which did not include a physical data carrier. 这些版本没有包含物理数据载体。
- A UDM is constructed over one or more physical data sources. UDM构造于一个或多个物理数据源之上。
- The name of the table in the physical data source which contains the column. 物理数据源中包含该列的表的名称。
- Responsible for design, analysis, programming and physical data modeling. 负责程序设计,数据分析,项目开发以及数据建模。
- Data Independence is the quality of DBMS that ensure the capability to change the database in a manner that the change in one level does not affect the other level. 数据的独立性是DBMS的特征，它能够将数据库转变为某种方式，而对某一层次的改变不会影响到其他的层次。
- This can intuitively reflect the relationship between various physical data. 从而能够直观地反应出不同物理量之间的关系。
- Where does the error in conventional numerical fitting come from for some physical data? 在传统的数值拟合中物理数据的误差来源于哪里?
- Contains the information about how an entity, attribute, role, or inheritance binds to a physical data source. 包含有关如何将实体、属性、角色或继承绑定到物理数据源的信息。
- Buffer Cache Memory allocated for storing data blocks read from physical data files. 缓冲区缓存为存储从物理数据文件读取的数据块而分配的内存。
- All you need to do is to generate the physical data model that corresponds to your conceptual data model. 唯一还需要做的事情就是生成与概念数据模型相对应的物理数据模型。
- The name of the column in the physical data source to which the entity or attribute is bound. 物理数据源中要与实体或属性绑定的列的名称。
- data independence and protection 数据独立性和保护
- DIU receives and sends serial data. C/DSU changes the format of serial data and matches the physical data link. DIU完成据串行接口的功能,C/DSU完成数据帧传输的格式转换和链路匹配的功能,同时实现了端口的复用和扩展。
- The SQL Server 2005 Database Engine sets file access permissions on the physical data and log files of each database to specific accounts. SQL Server 2005数据库引擎为特定帐户设置了对每个数据库中的物理数据和日志文件的文件访问权限。
- The abstract methods deal specifically with saving and loading data to a physical data store, and with data store administration. 这些抽象方法专门处理在物理数据存储区中的数据保存、数据加载和数据存储区管理。
- The virtual Binding object contains the information about how an Entity, Attribute, Role, or Inheritance object binds to a physical data source. 虚拟的Binding对象包含如何将Entity、Attribute、Role或Inheritance对象绑定到物理数据源上的信息。
- The data model about management and application of machine tool based on Erwin software is built. A method to achieve physical data library is given. 利用Erwin软件对加工中心刀具管理与应用进行了数据建模 ,给出了获得物理数据库的方法
- Searchable database of over 1300 hazardous chemicals. Includes names, synonyms, formula, physical data, NFPA ratings, DOT guides and registry numbers. 超过1,300种危险化学品的资料库，包含名称、符号、化学式、物性资料、NFPA分级、毒性程度。
