Keys Referencing relation foreign key relation Referenced relation

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Keys • Referencing relation : foreign key를 가지고 있는 relation • Referenced relation :

Keys • Referencing relation : foreign key를 가지고 있는 relation • Referenced relation : 다른 relation의 foreign key를 primary key로 가지고 있는 relation • Foreign key constraint(참조 무결성) : referencing relation의 foreign key값은 반드시 referenced relation에 존재해야 한다

스키마 Diagram relation attributes composite key Foreign key의 종속성은 참조하는 relation으로부터 참조되어지는 relation으로의 화살표로

스키마 Diagram relation attributes composite key Foreign key의 종속성은 참조하는 relation으로부터 참조되어지는 relation으로의 화살표로 나타낸다. Primary key

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