Тест по MySQL Итоговый
Quiz
•
Computers
•
10th Grade
•
Practice Problem
•
Medium
Светлана Соловьева
Used 1+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какая команда используется для обновления данных в таблице?
DROP TABLE
DELETE FROM
UPDATE
ALTER TABLE
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какая команда создаёт новую таблицу в базе данных?
CREATE FIELD
CREATE DATABASE
CREATE TABLE
CREATE INDEX
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какая команда удаляет все строки из таблицы, но не саму таблицу?
DROP TABLE
DELETE FROM table_name
TRUNCATE DATABASE
REMOVE TABLE
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какой оператор используется для фильтрации строк по условию?
ORDER BY
WHERE
HAVING
SELECT
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Что такое первичный ключ (PRIMARY KEY)?
Индекс таблицы
Поле с повторяющимися значениями
Уникальный идентификатор строки
Любое текстовое поле
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Что делает команда DROP TABLE?
Удаляет все строки
Удаляет таблицу и структуру
Очищает кэш
Обновляет схему
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Как объединить строки из двух таблиц?
MERGE
JOIN
COMBINE
ADD
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