To implement a conceptual schema in a database management system (DBMS), the schema has to be transformed in the specific data model supported by the DBMS in use. This transformation process is called "logical design," and the chapter discusses the logical design of relational databases. These...
aOnce approved by the users, the conceptual schema is converted into a specific database schema, depending on the data model and the database management system (DBMS) used for the implementationand users (Navathe 1992) 正在翻译,请等待...[translate]...
A database conceptual schema is a high-level description of how database concepts are organized, which is typically as classes of objects and their attributes. A fundamental operation in many database applications, schema matching involves finding a mapping mu between the concepts in a source schem...
APhysical Data Modeldescribes a database-specific implementation of the data model. It offers database abstraction and helps generate the schema. This is because of the richness of meta-data offered by a Physical Data Model. The physical data model also helps in visualizing database structure by...
A conceptual data model is also known as a conceptual schema. Techopedia Explains Conceptual Data Model A conceptual data model provides in-depth coverage of business concepts and is mostly developed for a business audience. It is never a solution model and is technology and application neutral ...
Performance Schema N/A N/A Yes Yes Permissions Yes Yes Yes Yes Primary Key Yes Yes Yes Yes Referential Integrity Yes Yes Yes Yes Sybase ASE: referential integrity only through triggers. Replication Yes Yes Yes Yes Role Yes Yes Yes N/A Roles are not available in MySQL at the databa...
In the paper a methodology for conceptual design of office data bases is described. It assumes forms as input documents to express requirements and produces as the result of the design process an Entity Relationship conceptual schema. Strategies are proposed to extract from the initial requirements ...
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 useful, is to capture real-world data requirements in a simple and meaningful way that is understandable by both the database desi...
Problem Description:For our university database, in the physical design phase, you would determine which DBMS to use (e.g., MySQL, Oracle, PostgreSQL) and create the actual database schema. This involves specifying the exact table structures, data types, constraints, and indexes. It also...
1 HowtoBuildaDBSystem?RequirementsAnalysis ConceptualDesignLogicalDesignRequirementsSpecificationNaturalLanguageInformal ConceptualSchema RelationalSchema FormalDBMS-independentDBMS-specific ImplementationMaintenance DBSystemPhysicalEvolvingSystem 2 CQU02005130DatabasePrinciplesandApplication,HuiminZhao&YongLi SystemsDevelopment...