Please help with this question. I am confused about the usage ofintegrity constraints, when should it be used? If a entity ispartially associated with a relation, for example having ancardinality of (0,N), should I create a integrity constraint forit? thank you.
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Get Help NowQuestion 11. [10 MARKs] Below is an Entity-Relationship diagram about car insurance. Translate this Entity-Relationship diagram into a relational schema. For each relation, provide its name, attributes and keys. To indicate a key, underline all attributes that are part of the key using a single line. To define referential integrity constraints, use relational notation (that is, use C notation, not SQL notation). If there are constraints in the ER diagram that cannot be expressed in the relational model, state what they are and why they cannot be expressed. In your design try to avoid creating a model where any of the attributes could be null. If this is not possible, explain why and what attributes would have to permit null values date license model color year driverlD (0,N) firstName lastName dob er own car (O,N) (0,N) ated pa insured branchNum damageAmount insurancelID reportiD date accident surance(O,N) location coverage InsuranceDate Show transcribed image text Question 11. [10 MARKs] Below is an Entity-Relationship diagram about car insurance. Translate this Entity-Relationship diagram into a relational schema. For each relation, provide its name, attributes and keys. To indicate a key, underline all attributes that are part of the key using a single line. To define referential integrity constraints, use relational notation (that is, use C notation, not SQL notation). If there are constraints in the ER diagram that cannot be expressed in the relational model, state what they are and why they cannot be expressed. In your design try to avoid creating a model where any of the attributes could be null. If this is not possible, explain why and what attributes would have to permit null values date license model color year driverlD (0,N) firstName lastName dob er own car (O,N) (0,N) ated pa insured branchNum damageAmount insurancelID reportiD date accident surance(O,N) location coverage InsuranceDate
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