
Oracle DDL, DML y DCL
Authored by Carlos López
Computers
Professional Development
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
El nombre de los campos calculados en Oracle es:
Campo calculado
Campo virtual
Columna calculada
Columna virtual
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si queremos acceder a ver todas las restricciones del usuario actual, usaremos el objeto:
Vista
Tabla
Tablespace
Recycle Bin
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Y si ahora queremos ver TODAS las restricciones que tiene un usuario, usaremos la vista:
DBA_CONSTRAINTS
ALL_CONSTRAINTS
USER_CONSTRAINTS
USER_CONSTRAINT
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Indica si es posible cambiar el nombre del objeto recuperado con FLASHBACK:
Siempre
Depende de si es de lectura o escritura
Depende de si es propiedad del usuario que lo hace
Nunca
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La diferencia entre las operaciones DELETE y TRUNCATE son que en la orden TRUNCATE:
Solo se conservan los campos
Solo se conservan los campos y los índices
Solo se conservan los campos, índices y vistas
Se conserva todo
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Indica si es necesario realizar un COMMIT para almacenar en disco un objeto al crearlo con el código
Siempre
Depende del tipo de objeto
Depende de los permisos del usuario que lo crea
Nunca
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Al crear una TABLA deseamos indicar el TABLESPACE dónde se va a almacenar. Indica las respuestas con la sintaxis correcta (Existe más de una respuesta correcta)
CREATE TABLE A AS
SELECT * FROM E
TABLESPACE C;
CREATE TABLE A
TABLESPACE C
AS SELECT * FROM E;
CREATE TABLE A
TABLESPACE A
(NB CHAR(10),
NUM NUMBER);
CREATE TABLE A
(NB CHAR(10),
NUM NUMBER)
TABLESPACE A;
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