INTRODUCTION TO ER-MODEL || COMPONENTS OF ER-MODEL|| ER-DIAGRAM || ENTITY RELATIONSHIP MODEL || DBMS

ER-MODEL
Entity Relationship Model / Entity Relationship Diagram

COMPONENTS OF ER-MODEL
1) ENTITY
i) Strong Entity
ii) Weak Entity
2) ATTRIBUTE
i) Key Attribute
ii) Composite Attribute
iii) Single Valued Attribute
iv) Multi Valued Attribute
v) Derived Attribute
3) RELATIONSHIPS
i) One to One Relationship
ii) One to Many Relationship
iii) Many to Many Relationship

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