model data: 一般都会用 relational data modeling。还有object-oriented data modeling, first-order logic data modeling... 我没用过这些=。= Secure data: 对于机密的数据应该控制好权限 Maintain data consitancy: 像github一样便于恢复。in face of software failures. Optimizedata access: 就是说好的数据库应...
“ANSI/X3/SPARC Study Group on Data Base Management Systems: Interim Report, FDT,” (Bulletin ofACM SIGMOD) 7(2) (1975). 4. N. J. Nilsson,Problem-solving Methods in Artificial Intelligence (McGraw-Hill, New York, 1971). 5. P. Chen, “The Entity-Relationship Model—Toward a Unified ...
The Teallach system applies model based techniques to the important area of database interfaces, which increases the importance of domain information. This exists in the form of a schema and can be captured in a high-level format, so that the developer need not build a domain description ...
Data modeling (data modelling)is the process of creating a data model for the data to be stored in a database. This data model is a conceptual representation of Data objects, the associations between different data objects, and the rules. Data modeling helps in the visual representation of da...
EReX: A Conceptual Model for XML In the last few years, XML has been widely used as a logical data model, and several database applications are modeled in XML. To model a database applicat... M Mani - DBLP 被引量: 52发表: 2004年 Conceptual modeling for XML: A survey Recently XML ...
Theconceptual modeldefines the entities and relationships in the system being modeled. 在系统建模时,数据概念模型定义了实体及其相关的关系. 互联网 The base class for the results of an object query against aconceptual model. 表示针对概念模型的对象查询的结果的基类. ...
Type SchoolModel.edmx for the model name. The Entity Data Model Wizard appears. In the Choose Model Contents dialog box, select Generate from database. Then click Next. Click the New Connection button. In the Connection Properties dialog box, enter your server name, select the authentication me...
accuracy, integrity, security, and performance. A thorough conceptual design helps stakeholders understand and align on the data model. A logical design helps eliminate redundancy and clarify relationships. The physical design ensures optimal performance, scalability, and security in the chosen da...
Physical data model example Conclusion Data modeling is a technique to document a software system using entity relationship diagrams (ER Diagram) which is a representation of the data structures in a table for a company’s database. It is a very powerful expression of the company’s business ...
In recent years, several models have been proposed for recording provenance of data. Our work is motivated by opportunities to make provenance easy to manage and query. For example, current approaches model provenance as expressions that may be easily stored alongside data, but are difficult to ...