Sprawdzian z Bazy Danych
Flashcard
•
Computers
•
3rd Grade
•
Hard
Wayground Content
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2 questions
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1.
FLASHCARD QUESTION
Front
Zaznacz poprawne dokończenie zdania. Do jednoznacznej identyfikacji rekordów stosuje się
Back
klucz o niepowtarzalnej wartości.
2.
FLASHCARD QUESTION
Front
Co się stanie, gdy dane zostaną zgrupowane?
Back
Połączone zostaną te dane, które mają część wspólną, aby wykonać konkretną operację, np. liczenie częstości, sumowanie, obliczanie średniej.
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