Construct an E-R diagram restraint a car protection assembly whose customers confess individual or over cars each. Each has associated with it nothing to any compute of chronicled accidents. Each protection device covers individual or over cars, and has individual or over encouragement reimbursements associated with it. Each reimbursement is restraint a detail age of opportunity, and has an associated ascribable spell, and the spell when the reimbursement was common.
Rectangle boxes denotes the board and oval dissipation denotes the attributes of those boards. The rhombus emblem depicts the analogy.
1…* is individual to multifarious relative and 1..1 is individual to individual relative.
Primary fields of the board are underlined restraint each board.