SisTrans - C12 SQL parte 1
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Oscar A
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7 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Los comandos SQL pueden ser divididos en 2 categorias:
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Los comandos DML permiten agregar, modificar y borrar filas de tablas
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Una tabla puede ser borrada de la base de datos usando el siguiente comando:
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Es posible realizar modificaciones en la estructura de una tabla a través del siguiente comando:
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
La diferencia entre los tipos de datos Char y Varchar es que la longitud del primero es variable y del segundo fija
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la siguiente sentencia, dept_name es una llave foránea en la tabla course y hace referencia a department.budget
True
False
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
La sentencia "alter table r add A D;" modifica la relación r agregando los atributos A y D
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