UML建模之数据建模(Data Model Diagram) (TableTrigger)4、表约束(TableConstraint)5、视图(View)6、存储过程(StoredProcedure)三、数据建模实例四、总结一、数据建模简介数据建模不仅可以对象的属性建模(比如E-R图),也可以对数据的行为建模(比如触发器Trigger、存储过程StoredProcedure).在进行数据库设计时,设计到如下...
The star schema is widely accepted as the de facto data model for data warehouse design. A popular approach for developing a star schema is to develop it from an entity-relationship diagram with some heuristics. Most of the existing approaches analyze the semantics of an ERD to generate a sta...
java documentation schema database reverse-engineering schemaspy database-schemas database-diagrams er-diagram entity-relationship-diagram database-document database-documentation Updated Aug 26, 2024 HTML pgmodeler / pgmodeler Sponsor Star 3.1k Code Issues Pull requests Discussions Open-source data m...
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SAMSTAR displays the resulting star schemas on a computer screen graphically. With this automatic generation of star schema, this system helps designers reduce their efforts and time in building data warehouse schemas.Il-Yeol SongRitu KhareYuan An...
feature model: A feature model is a model that defines features and their dependencies. Basically, there are two kinds of dependencies: the parental relationships, which can be of five types, i.e., mandatory, optional, alternative, AND group cardinality and OR group cardinality; and the cross...
What is a database diagram? A database diagram shows the logical structure of a database, including the relationships and constraints that determine how data can be stored and accessed. Individual database models are designed based on the rules and concepts of whichever broader data model the de...
Diese vier Kategorien wurden bei der Erstellung dieses Modells definiert. Mit der Zeit wurde die Geschäftswelt jedoch immer komplexer und es mussten mehr Faktoren berücksichtig werden. Zunächst einmal wurden zwei weitere Kategorien definiert, das sogenannte 6M Schema: ...
1.1340. XMLModelText 1.1341. XMLNamespaceAttribute 1.1342. XPDLApplication 1.1343. XPDLDataField 1.1344. XPDLFormalParameter 1.1345. XPDLImplementation 1.1346. XPDLTool 1.1347. XSAttributeDetail 1.1348. XSAttributeType 1.1349. XSClassDetail 1.1350. XSComplexType 1.1351. XSDAll 1.1352. XSDAnnotation 1.1353....
chätzen: Sie eröffnet ein großes Arsenal weiterer diagrammatischer Operationen, die neue Sichten auf die Daten generie- ren: The concept of a geometric feature space allows us to take the most basic method of human- ities – a comparision – and extend it to big cultural data....