
BD1_UTP2022
Authored by Celsa Sanchez
Professional Development
University
Used 7+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un Schema
es una persona que puede conectarse a la base de datos. Requiere username y password.
es un contenedor para los objetos de los que un usuario es dueño
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reglas para los nombres de objetos: Tablas
Pueden tener una longitud de 500 caracteres
Pueden tener una longitud de 130 caracteres
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Los SGBD más poderosos son capaces de gestionar transacciones en cumpliendo de la norma que asegura los llamados cuatro aspectos ( ACID). Uno de estos aspectos es: Atomicidad (A) que hace referencia a:
Que implica que ninguna instrucción se pueda quedar a medias.
Asegura que las transacciones simultáneas no se afecten entre sí
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para la intrucción:
ALTER TABLE countries
ADD ( CONSTRAINT countr_reg_fk
FOREIGN KEY (region_id)
REFERENCES regions(region_id)
) ;
1ero se construye la tabla regions y luego la tabla countrie
1ero se construye la tabla countries y luego la tabla regions
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Selecione el "SELECT" que tiene la información de la imagen de retorno
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