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Ana Sayfa / Tag Archives: FK

Tag Archives: FK

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Anahtar Mantığı Nedir ? Türleri Nelerdir ?

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Bir kayıt içerisinde farklılıkları ve nitelikleri gösteren belirleyicilere anahtarlar (keys) denir. Bir tablo içerisinde bulunabilecek anahtarlar şunlardır : Birincil anahtar (Primary key – PK) Tekil anahtar (Unique key – UK) Referans anahtar (Foreign key – FK) Birleşik anahtardır (Composite key – CK) Birincil Anahtar (Primary Key): Bir tablo içerisindeki satırları birbirinden ayırt eder. Birincil anahtar olan bir veri aynı tablo …

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