A cikin ragamar aikin aiki maras nauyi wani nau'i shine alamar wani
A cikin duniyar ka'idar ka'idodin dangantaka, aikin dogara yana kasancewa yayin da sifa ɗaya ya ƙayyade wata alama ta musamman a cikin ɗakunan bayanai. Matsayi mai mahimmanci aikin aiki shi ne dogara ga bangarorin da ke faruwa a yayin da aka kwatanta aiki na dogara da wani halayyar ko wani tarin halaye wanda ya haɗa da alamar asali.
Misalan Ayyuka Masu Mahimmanci na Ayyuka
Irin wannan dogara ne ake kira maras muhimmanci saboda ana iya samo shi daga hankula. Idan ɗaya "gefen" wani sashi ne na ɗayan, an yi la'akari da maras muhimmanci. Hagu na gefen hagu yana la'akari da mai ƙayyadewa da kuma haƙƙin mai dogara .
- {A, B} -> B shine nauyin dogara ne mai ban mamaki saboda B shine saiti na A, B. Tun { A, B} -> B ya hada da B , darajar B za a iya ƙayyade. Yana da matukar muhimmanci saboda aikin kayyade B yana jin dadin ta dangantaka da A, B. Tun da dabi'u na B sun ƙayyade ta dabi'u na A , duk wani jerin da ke ba da lambobin A za su sami ainihin maɗaukakan kamar B. Wata hanya ta sanya shi shine duk B an haɗa shi a A , wanda shine dalilin da ya sa ya zama sashi na A.
- {Aikin ma'aikaci_ID, Employee_Name} -> Employee_ID kuma mahimmanci ne na aikin aiki tun lokacin Employe_ID ya zama sashin {Employee_ID, Employee_Name} .
- Haka ma yake ga A -> A ko Employee_ID -> Employee_ID, da Employee_Name -> Employee_Name . Duk waɗannan nau'ikan dogara ne na aikin aiki.
- Idan wani aikin dogara na X-> Y, kuma Y sigar saiti ne na X, wannan aikin dogara ne mai ban mamaki. Idan Y ba saiti ne na X ba, wannan ba mai dogara ne ba.