ACCOUNTABILITY PATTERNS FOWLER,M',ANALYSIS PATTERNS: CHAPTER 2

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ACCOUNTABILITY PATTERNS ?????
???(FOWLER,M.,ANALYSIS PATTERNS CHAPTER
2)????? ???? ???? ???? ??? ??? ??????
???????
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???? ?-ACCOUNTABILITY

• ????? ?????? ??? ?? ??? ??-?????? ??????
  ????????, ??? ??? ????? (PARTIES) ???????
  ????????? ????? ??? (?????).
• ?? ??? ?????
• (RESPONSIBLE TO,CHILD)
• ???? ?? ??? (COMMISSIONER,PARENT)

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???? ?-ACCOUNTABILITY

• ??????? ??? ??? ??? ?? ????-????? (ACCOUNTABLE
  FOR) ???? ??? ????.
• ??????? ??? ?? ??? ??? ?"??", ???? ???? ???
  ?"??" .

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???? ?-ACCOUNTABILITY

• ???????
• - ???? ?????? ??? ??? ???? (?????????? ????
  ??????).
• - ????? ???? ?"? ????.
• - ????? ???? ???? ????? ????? ?????.
• - ????? ???????? ????? ???????????.

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???? ?-ACCOUNTABILITY

• ???? ????? ????? ?? ???????? ???????? ?????
  ???????? ?? ??????? ???????.
• ???????
• ???? ????? ????? ????? ????? ?? ??????, ???
  ?????,????.

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???? ?-ACCOUNTABILITY(??????? ????).

• ????? ????? ????? ??' ?????? ???? ???? ??"?
  ??????,???? ???? 30 ???????? ????.
• ????? ???? ??"? ?????? ????? ?????? ??????,
  ?????? ????-???? ??? ????? ???? ?????-?? ??????.

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????? ????? ?????? ??????

• ?????? ??? ?????? ?? ????? ??? ?????? ?????.
• ????? ??? ???? ?? ????? ???-??? ???? ???????.
  ??? ?????? ????? ??, ?? ???
• ??? ,????? ??????-????? ??????, ???? ???? ?? ?

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????? ?? ???????

• ????? ????,?? ?? ??-?? ???? ?? ?? ??? ???????
• ???? COMMISSIONER ??? ??
• ???? ,RESPONSIBLE ????? ?????? ??
• ?????? ???? ????? ????? ?????? ???.

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Accountability Pattern
The Accountability Pattern can be used to model
situations where there exists a relationship of
responsibility between two parties -
Employment - Order - Contract - Membership -
Offering ACCOUNTABILITY TYPE specifies
different kinds of accountability. In an
employment context, it could contain permanent
employment, project employment, time limited
employment, etc.
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Subtypes
One way to show different categories is to
introduce a number of subtypes. However, such a
solution may result in a very large schema.
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Powertypes
VEHICLE TYPE would have instances such as Car,
Truck, Boat, Bike, MC, Aeroplane, ...
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VEHICLE would have instances such as abc123
(which is a Car), vv22 (which is a Boat), ...
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?????? ?-POWER-TYPE PATTERN

• ??? ?????? ?????? PARTY ????? ???????
  "?????-????" ?????? ????, ?????? PARTY-TYPE.
• ??? ??????? ?? ?????, ?????? PARTY?????, ,?????
  ??????? "?????-????" ?????? ?????.
• ?? ??????? ??? ??? ??? ????,???????????, ??-?????
  ?? ?????? PARTY,?? ??? ????? ?? ?? ??????????
  ???? ?????? ?-PARTY.

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• ?? ?? ????? ??? ????? ?????? ??
• ??-?????? ?????? ?? ?????????, ??? ????
• ???? ???? ??? ?? ???? ?????? ??? ????
• ????????????.

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