secondary key

secondary key
antrinis raktas statusas T sritis informatika apibrėžtis ↑Raktas (↑įrašo ↑laukas (2)), negalintis vienareikšmiškai identifikuoti įrašo ↑duomenų bazėje. Paprastai tai reikšmių laukas. Tokias pat reikšmes gali turėti keli įrašai. Pavyzdžiui, asmenų duomenų bazėje pavardžių lauko reikšmė yra antrinis įrašas, nes gali būti bendrapavardžių. atitikmenys: angl. secondary key ryšiai: dar žiūrėkduomenų bazė dar žiūrėkįrašas dar žiūrėklaukas dar žiūrėkpotencialusis raktas dar žiūrėkraktas dar žiūrėkraktas dar žiūrėkraktas dar žiūrėkraktas palyginkpirminis raktas

Enciklopedinis kompiuterijos žodynas . . 2008.

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