Construct an E-R diagram coercion a car protection aggregation whose customers acknowledge undivided or over cars each. Each has associated with it naught to any calculate of chronicled accidents. Each protection cunning covers undivided or over cars, and has undivided or over encouragement cancelments associated with it. Each cancelment is coercion a detail limit of season, and has an associated ascribable duration, and the duration when the cancelment was current.
Rectangle boxes denotes the consultation and oval dispersion denotes the attributes of those consultations. The rhombus controlm depicts the correlativeness.
1…* is undivided to manifold ratio and 1..1 is undivided to undivided ratio.
Primary fields of the consultation are underlined coercion each consultation.