Bases de Datos
Quiz
•
Computers
•
University
•
Practice Problem
•
Hard
JESUS AURELIO CASTRO
Used 20+ times
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19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
En MYSQL, ¿cuál de estas sentencias crea una base de datos?
ADD
CREATE
UPDATE
INCLUDE
2.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
¿Qué instrucción SQL devolverá el País y el Número de pedidos de cada País cuando el número de pedidos sea inferior a 50?
SELECT OrderID ,Pais FROM OrdersGROUP BY CountryWHERE COUNT(OrderID)<50;
SELECT COUNT(OrderID) ,Pais FROM OrdersHAVING COUNT(OrderID)<50GROUP BY Country;
SELECT Pais, orderID FROM OrdersWHERE COUNT(OrderID) <50GROUP BY Country;
SELECT COUNT(OrderID) ,Pais FROM OrdersGROUP BY CountryHAVING COUNT(OrderID)<50;
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Cuál cláusula permite ordenar los resultados a través de una o más columnas?
ORDER BY
UPDATE
SELECT
INSERT INTO
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Para modificar uno o varios datos de uno o varios registros utilizamos?
UPDATE
SELECT
SHOW
INSERT INTO
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Para eliminar los registros de una tabla usamos el comando
ORDER BY
DELETE
DROP CHANGE
DISTINCT
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Cual es la opcióncorrecta para incluir un campo en una tabla ya creada?
alter table estudiantes add Edad int;
alter table estudiantes modify Edad int;
alter table estudiantes change Edad int;
alter table estudiantes drop Edad int;
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Cuáles son las opciones correctas para insertar registros en una tabla?
insert into Estudiantes (Cod int primary key, Nombre varchar(20) values ('José');
insert into Estudiantes (Cod, Nombre) values (1, 'José');
insert into Estudiantes (Cod, Nombre, Apellido) values ('José');
insert into Estudiantes (Cod, Nombre) values (1, 'José'), (2, 'José');
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