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What is the difference between entity relationship diagram and extended entity relationship diagram?
Wiki User
∙ 12y ago
Realtional databse is the type of databse which is bascially designed to store the deta on OLTP(Online transaction Processing) systems. Entity relatioship databases are basically designed for reporting perpose. It store the Data from OLAP( online Analytical Processing) systems.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoHi,
Sorry, I'm not good in English, but I'll try to explain.
actually extended ERD is the ERD it self but with more relations. In other words some relationships in ERD was not seen, so these relationship are explained in EERD such as "Is_a" (Specialization,Generalization), "Is a Part of" and Aggregation
Wiki User
∙ 10y agodifferents between entity and attributes
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