
ПЗ-11 Oracle
Authored by Азамат Кальпебаев
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что возвращает подзапрос (SELECT AVG(salary) FROM employees)?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой оператор используется для фиксации транзакций?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что делает оператор MERGE?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что делает следующий запрос: SELECT e.employee_id, e.last_name, e.department_id, d.department_name FROM employees e JOIN departments d ON e.department_id = d.department_id;
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой ключевое слово используется в подзапросе для выбора сотрудников-менеджеров?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В какой таблице хранится история смен должностей?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что делает оператор COMMIT?
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