(Answered) For a one-to-many relationship between tables of project

Engineering

For a one-to-many relationship between tables of Project and Employee, if the minimal cardinality is as following situations, discuss the way to ensure the data integrity when data is inserted, modified and deleted. (Note, you may draw a table to illustrate for each situation, refer to textbook).

a. O-M b. M-O c. M-M d. O-O

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