
Fundamentos de Base de datos
Authored by Mario Alberto Carmona Campos
Computers
University
Used 5+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Operación que combina un elemento de una relación con todos los elementos de otra relación
Selección
Proyección
Producto Cartesiano
Unión natural
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Las operaciones del algebra relacional que trabajan con una relación son:
Unión
Selección
Proyección
Intersección
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Despliega el apellido paterno, materno y nombres de todos los empleados fijos.
σ Paterno, Materno, Nombres (Fijos)
π Paterno, Materno, Nombres (Fijos)
Fijos
τ Paterno, Materno, Nombres Fijos
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Entidad es sinónimo de?
Tabla
Columna
Campo
LLave
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Campo es sinónimo de:
Tabla
Columna
Fila
Registro
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atributo es sinónimo de:
Campo
Entidad
Relación
Dato
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si el campo es clave primaria, cuantas veces se puede repetir el dato dentro de la tabla.
Maximo 1
Ninguna
2
4
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