ERD Notation - {multi-valued} E E A B R R A B A B A B R...

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ERD Notation Basic Notation Meaning Old Style New Style Entity Relationship Attributes Weak Entity Identifying Relationship Type Associative Entity 1 E E A B R A B E simple composit p1 p2 p3 derived mulit-valued E key simple [derived] (p1, p2, p3)
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Unformatted text preview: {multi-valued} E E A B R R A B A B A B R Cardinality and Participation Constraints Meaning Old Style New Style 1:1 1:M M:M Mandatory 1:1 Mandatory 1:M Optional 1:M Mandatory M:M 2 or or...
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ERD Notation - {multi-valued} E E A B R R A B A B A B R...

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