BD-Algebra
1st Grade
•10 Qs
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BD-Algebra
Quiz
•
Other
•
1st Grade
•
Practice Problem
•
Medium
Marco Rivera
Used 29+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es uno de los dos grupos clasificadores del algebra relacional?
Paradigma Orientado a Objetos
Teoría matemática de conjuntos
Operaciones matemáticas
Teoría relacional
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Para qué se utiliza el operador Select?
Seleccionar un subconjunto de tuplas de una relación.
Renombrar un subconjunto de atributos de una relación.
Seleccionar un subconjunto de atributos de una relación.
Seleccionar un subconjunto de tuplas que satisfagan una condición.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Es el select conmutativo?
Verdadero
Falso
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Se puede combinar en cascada el Select?
Verdadero
Falso
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿El Project descarta cualquier tupla duplicada?
Verdadero
Falso
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿El operador intersección aplica solo para relaciones compatibles?
Verdadero
Falso
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿El natural join omite una de estas columnas de join?
Verdadero
Falso
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