
BD v2
Authored by Guillermo Uscudum
Computers
University
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39 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué representa un rombo en un diagrama entidad-relación (E-R)?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de los siguientes es un ejemplo de atributo multivaluado?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué es una clave primaria en el modelo relacional?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué representa una tupla en el modelo relacional?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué operación de álgebra relacional se utiliza para seleccionar filas que cumplen una condición?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué operación permite combinar todas las tuplas de dos relaciones?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es el objetivo del diseño relacional?
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