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Froggy Jumps
Froggy Jumps

Релaционни бази данни – 12 клас

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Релaционни бази данни – 12 клас

Froggy Jumps

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About this activity

Теория и основи SQL

Created by

Мартин Кейбашиев
Мартин Кейбашиев
Bulgaria

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Релaционни бази данни – 12 клас
 

Froggy Jumps

Релaционни бази данни – 12 класOnline version

Теория и основи SQL

by Мартин Кейбашиев
1

Какво е релационна база данни?

2

От какво е изградена една релационна база от данни?

3

Какво представлява атрибутът в таблица?

4

Какво представлява записът в таблица?

5

Какво означава стойността NULL?

6

Колко е мощността на таблица с 5 реда и 8 колони?

7

Колко е записа има таблица с 5 реда и 8 колони?

8

Коя операция събира всички различни редове от две таблици?

9

Коя операция събира извежда всички еднакви редове от две таблици?

10

Кой от следните е пример за домейн?

11

Какво означава думата „релационна“?

12

Коя от операциите не е част от релационната алгебра?

 
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