Refer to the following UML class diagram to answer questions 11 to 15 below about the relational database based on this model. 
Definitions:
Common-law Marriage
A marriage recognized in some jurisdictions, where a couple lives together for a period and presents themselves as married without having a formal ceremony or license.
Allowance for Doubtful Accounts
A contra-asset account used to estimate the portion of accounts receivable that may not be collectible.
Bad Debts Expense
Bad debts expense is the cost associated with accounts receivable that a company does not expect to collect due to customers being unlikely to pay.
Credit Balance
A situation where the total credits in an account exceed the total debits.
Q3: The roll-out of electronic medical records and
Q9: The MMM Modified Monash Model distinguishes different
Q9: There is a growing body of evidence
Q11: Smart contracts may be an opportunity for
Q12: The symmetric-key encryption method is used to
Q20: An enterprise resource planning system has which
Q26: When Uber (a ride sharing application)developed their
Q30: The Public Company Accounting Oversight Board (PCAOB)is
Q31: Business Process Modeling Notation (BPMN)activity diagrams depict
Q38: The main financial benefit of Customer Relationship