Referential integrity and participation are both bidirectional, meaning that they must be addressed in both directions along a relationship.
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Q2: Relationships between entities always operate in one
Q3: An entity in the entity relationship model
Q4: Connectivities and cardinalities are established by concise
Q5: The Crow's Foot notation easily identifies multivalued
Q6: The existence of a mandatory relationship indicates
Q7: In the original Chen notation, each attribute
Q8: The entity relationship model (ERM) is dependent
Q9: A weak entity has a primary key
Q10: The Crow's Foot notation is less implementation-oriented
Q11: In Chen notation, there is no way
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