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Enterprise Model Patterns: Describing the World (UML Version) by David C. Hay

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As mentioned earlier, the possible catalogue of different kinds of Instruments can be quite extensive. Even so, they all come down to the three main categories shown in Figure 20-2: Loan, Deposit, and Equity. (There are Other Instrument categories, but these typically are combinations of the main three.) Of particular interest here are three primary sub-types of Deposit: the Checking Account, the Savings Account, and the Brokerage Account. As all should know, the Savings Account and Checking Account are arrangements whereby the bank holds the customer’s money safely.

Figure 20-2: Instrument Characteristics and Categories ...

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