Viewing entity relationship diagrams using hyperli

专利名称：Viewing entity relationship diagrams using

hyperlinks

发明人：Eric R. Jorgensen申请号：US09/005056申请日：19980109公开号：US05933831A公开日：19990803

摘要：An entity relationship diagram for a relational database is generated fromintrospection of the relational database to determine which entities should be includedwithin a specific table to be displayed. Tables within the entity relationship diagram aredisplayed with icons hyperlinked to other portions or displays of the entity relationshipdiagram. A trigger icon links the displayed table to a display of the trigger informationfor the displayed table. A primary key icon indicates which column of the displayed tableis utilized as the primary key for the displayed table, while a foreign key icon links thedisplayed table to a display of another table in the entity relationship diagram containingthe foreign key. Dashed or dotted lines and dot or diamond terminators associated withthe foreign key icon described the relationship between the displayed table and thelinked table. A constraint icon links the displayed table to a display of the constraintinformation for an entity. A menu icon links the displayed table to a pop- up menu ofchild tables for the display table. Entity relationship diagrams for relational databasesmay thus be viewed in manageable, easily comprehensible portions, with links betweentables directly associating the displayed table with the proper portions of the linkedtables. The entity relationship diagram automatically reflects changes to the

corresponding relational database.

申请人：LSI LOGIC CORPORATION

代理人：David K. Lucente

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