conceptual model, reasoning in database query writing task & computer reply prediction, college studentsThis paper proposes that database query writing may be viewed as a hypothesis testing activity. The paper attempts to contribute to the knowledge of what constitutes an appropriate model for ...
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...
We will use both the ER model and UML to illustrate the data modeling and logical database design examples throughout this book. In conceptual data modeling, the overriding emphasis is on simplicity and readability. The goal of conceptual schema design, where the ER and UML approaches are most...
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To create the School sample database Use Management Studio or Management Studio Express to execute a Transact-SQL script shown in theSchool Database Shematopic. To create the class library project that contains the conceptual model In this section you will use the Entity Data Model Tools to crea...
no systematic conceptual modelling method for the design of database systems (DBS) and knowledgebased systems (KBS) is specified, so it remains as a widely-used but vague jargon. This paper investigates these fundamental issues and presents the foundations of an approach that is based on the wh...
Computer applications in the nontraditional area have put requirements on conceptual data modeling. Some conceptual data models, being the tools of design ... ZM - 《Journal of Database Management》 被引量: 33发表: 2005年 A conceptual model for the logical design of temporal databases Although ...
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...
Data modeling (data modelling) is the process of creating a data model for the data to be stored in a database.
2) concept database model 概念数据库模式3) conceptual database 概念数据库 1. And how to define the subject,establsh the conceptual database and logical database is also described. 通过某省电力公司信息系统数据模型的建立,讨论了总体数据规划的必要性,以及总体数据规划的核心──主题数据库的组成...