
Test Tercer Parcial BDD
Authored by Oscar Lopez
Computers
University
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25 questions
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1.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
Se refiere al hecho de que los Sistemas Administradores de Base de Datos permiten que muchas transacciones accedan a una misma Base de Datos a la vez.
2.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Son problemas comunes de la concurrencia.
Lectura sucia
Fantasma
Actualización perdida
Dead Lock
3.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
Es una situación en la que dos o más transacciones se encuentran en estados simultáneos de espera, cada una de ellas esperando que alguna de las demás libere un bloqueo para poder continuar.
4.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Son modos de bloqueo
Compartido
Actualización
Exclusivo
Heradado
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Es la espera indefinida de una transacción por un bloqueo que no se llega a conceder porque se cede a otras transacciones.
Livelock
Deadlock
Bloqueo de intensión
Bloqueo compartido
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Es una planificación concurrente equivalente a una secuencia.
Serialidad
Interbloqueo
Plan serializable
Livelock
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Es un identificador único creado por el SGBD (Sistema de Gestión de Bases de Datos) y que indica el tiempo de inicio relativo de una Transacción.
Serialidad
Interbloqueo
Plan serializable
Marca temporal
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