
BASES DE DATOS PREVIO
Authored by Carlos López
Computers
Professional Development
Used 23+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En Access a las consultas que piden datos a los usuarios se las denomina,
Consultas de selección
Consultas de parámetros
Consultas de selección con parámetros
Ninguna de las anteriores
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Completa la Query CON TANTOS CARACTERES COMO GUIONES haya. (No se distingue entre mayúsculas/minúsculas)
SELECT ENAME, SAL, COMM
FROM ___
WHERE SAL >1000;
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El operador que usamos para quitar duplicados en las querys se denomina,
DISTINCT
ORDER BY
IS NULL
<>
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Indica si la query siguiente es correcta o no bajo Oracle.
SELECT ENAME
FROM EMP
WHERE ENAME LIKE '*A*';
SÍ
NO
ES POSIBLE
NO TENGO NI PAPA
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Completa la query para obtener el mayor número posible de registros.
SELECT DEPTNO
FROM EMP
WHERE COMM IS NOT NULL ___ JOB IS NOT NULL
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El objetivo principal de los algoritmos genéticos es,
Generar descendientes
Generar super individuos/as
Optimizar problemas
Optimizar aplicaciones
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Rellena el espacio de la siguiente query si deseamos mostrar los resultados
ordenados por el JOB ESCRIBIENDO UN ÚNICO CARÁCTER.
SELECT ENAME, SAL, DEPTNO, JOB, COMM
FROM EMP
WHERE EMPNO <> 7900 AND DEPTNO NOT IN (10,20)
ORDER BY _ DESC
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