Dear All,
Here my naive attempts to define purchase etc., may be some financial
or legal experts can check or improve...
E?? Purchase
Subclass of:E8 Acquisition
Superclass of:
Scope note:This class comprises transfers of legal ownership from one or
more instances of E39 Actor to one or more other instances of E39 Actor,
which are completely compensated by payment of a monetary amount. In
more detail, a purchase contract initiates a monetary obligation of the
receiving party of the transferred objects to the giving party. An
instance of Exx Purchase begins with the contract or equivalent
agreement and ends with the successful transfer of the monetary amount
to the giving party. In case the activity is abandoned before both
parties have fulfilled their contractual obligations, the activity is
not regarded as an instance of Exx Purchase.
This class is a very specific case of much more complex social business
practices of exchange of good and the creation and satisfaction of
related social obligations, which may be described by a compatible
extension of this model. Purchase activities which define individual
sales prices per object can be modelled by instantiating Exx Purchase
for each object individually and as part of an overall transaction.
Properties:
P?? had sales price (was sales price of)): E?? Monetary Amount
E?? Monetary Amount
Subclass of:E54 Dimension (Later, E54 Dimension has to be generalized to
"Quantity")
Scope note:This class comprises quantities of monetary possessions or
obligations in terms of their nominal value with respect to a particular
currency. These quantities may be abstract accounting units, the nominal
value of a heap of coins or banking notesat the time of validity of the
respective currency, the nominal value of a bill of exchange or other
documents expressing monetary claims or obligations.
Properties:
P?? has currency(was_currency_of): E?? Currency
P??has amount : E60 Number
E?? Currency
Subclass of:E55 Type
Scope note:This class comprises the units in which a monetary system
supported by an administrational authority or other community quantifies
and compares all monetary amounts declared in on such unit
arithmetically. The unit of a monetary system must describe a nominal
value which is kept constant by its authority and an associated banking
system, and not by market value. For instance, one may pay with grams of
gold, but the respective monetary amount may be agreed on as the gold
price in US dollars the day of the payment. Under this definition,
British pounds, U.S. dollars, and European euros are examples of
currency, but “grams of gold” are not. One monetary system has only one
currency. Instances of this class must not be confused with coin
denominations, such as “Dime” or “Sestertius”. Non-monetary exchange of
values in terms of quantities of a particular type of goods, such as
cows, do not constitute a currency.
Examples:“As” (Roman mid republic), “Euro”, “US Dollar”
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