
Banco de Dados e SQL
Quiz
•
Information Technology (IT)
•
12th Grade
•
Practice Problem
•
Medium
Washington Silva
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53 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das opções abaixo descreve melhor um Diagrama Conceitual?
Representa a estrutura física do banco de dados
Define tabelas e chaves primárias
Representa as entidades e seus relacionamentos
É utilizado apenas em bancos NoSQL
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O Diagrama Relacional é utilizado para:
Criar um banco de dados no MySQL automaticamente
Representar tabelas, chaves primárias e estrangeiras
Analisar o desempenho de consultas SQL
Substituir completamente um Diagrama Conceitual
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual comando DDL é usado para criar uma nova tabela no MySQL?
CREATE DATABASE
CREATE TABLE
INSERT INTO
ALTER TABLE
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual comando DDL permite modificar a estrutura de uma tabela existente?
ALTER TABLE
UPDATE TABLE
MODIFY TABLE
CHANGE TABLE
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual comando DML é usado para inserir dados em uma tabela?
INSERT INTO
ADD DATA
CREATE ROW
ADD RECORD
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que a função COUNT() retorna?
Soma de valores de uma coluna
Número total de registros
Maior valor de uma coluna
Menor valor de uma coluna
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual função SQL é usada para calcular a média de valores de uma coluna?
SUM()
COUNT()
AVG()
MIN()
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