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Oracle Introduction to Oracle9i: SQL Sample Questions:

1. Examine the statement:
Create synonym emp for hr.employees;
What happens when you issue the statement?

A) You create a table called employees in the HR schema based on you EMP table.
B) You will have two identical tables in the HR schema with different names.
C) An error is generated.
D) You create an alternative name for the employees table in the HR schema in your own schema.

2. The CUSTOMERS table has these columns:

A promotional sale is being advertised to the customers in France. Which WHERE clause identifies customers that are located in France?

A) WHERE lower(country_address) = '%france%'
B) WHERE lower(country_address) LIKE %france%
C) WHERE lower(country_address) = "france"
D) WHERE lower(country_address) IS 'france'
E) WHERE lower(country_address) = 'france'

3. Which view should a user query to display the columns associated with the constraints on a table owned by the user?

A) USER_COLUMNS
B) USER_CONSTRAINTS
C) ALL_CONSTRAINTS
D) USER_CONS_COLUMNS
E) USER_OBJECTS

4. Management has asked you to calculate the value 12*salary* commission_pct for all the employees in the EMP table. The EMP table contains these columns:

Which statement ensures that a value is displayed in the calculated columns for all employees?

A) SELECT last_name, 12*salary* (commission_pct,0) FROM emp;
B) SELECT last_name, 12*salary* commission_pct FROM emp;
C) SELECT last_name, 12*salary*(nvl(commission_pct,0)) FROM emp;
D) SELECT last_name, 12*salary*(decode(commission_pct,0)) FROM emp;

5. You would like to display the system date in the format "Monday, 01 June, 2001".
Which SELECT statement should you use?

A) SELECT TO_CHAR(SYSDATE, 'FMDay, DD Month, YYYY') FROM dual;
B) SELECT TO_DATE(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;
C) SELECT TO_CHAR(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;
D) SELECT TO_DATE(SYSDATE, 'FMDAY, DD Month, YYYY') FROM dual;
E) SELECT TO_CHAR(SYSDATE, 'FMDD, DY Month, 'YYYY') FROM dual;

Solutions: