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Oracle Database SQL Sample Questions (Q226-Q231):

NEW QUESTION # 226
Which two queries return the string Hello! we're ready?

A. SELECT q'[Hello! We're ready]'FROM DUAL;
B. SELECT q'! Hello! We're ready! 'FROM DUAL;
C. SELECT 'Hello! We're ready' FROM DUAL;
D. SELECT 'Hello! we re ready' ESCAPE'N'FROMDUAL:
E. SELECT "Hello! We're ready "FROM |DUAL;

Answer: A,B

NEW QUESTION # 227
View the Exhibit and examine the structure of the CUSTOMERS table.

Using the CUSTOMERS table, you must generate a report that displays a credit limit increase of 15% for all customers.
Customers with no credit limit should have "Not Available" displayed.
Which SQL statement would produce the required result?

A. SELECT NVL(cust_credit_limit*.15,'Not Available') "NEW CREDIT"FROM customers;
B. SELECT NVL(cust_credit_limit,'Not Available')*.15 "NEW CREDIT"FROM customers;
C. SELECT NVL(TO_CHAR(cust_credit_limit*.15),'Not Available') "NEW CREDIT"FROM customers;
D. SELECT TO_CHAR(NVL(cust_credit_limit*.15,'Not Available')) "NEW CREDIT"FROM customers;

Answer: C

NEW QUESTION # 228
Examine the description of the BOOKS table:

The table has 100 rows.
Examine this sequence of statements issued in a new session;
INSERT INTO BOOKS VALUES ('ADV112' , 'Adventures of Tom Sawyer', NULL, NULL); SAVEPOINT a; DELETE from books; ROLLBACK TO SAVEPOINT a; ROLLBACK; Which two statements are true?

A. The second ROLLBACK command does nothing.
B. The first ROLLBACK command restores the 101 rows that were deleted and commits the inserted row.
C. The second ROLLBACK command undoes the insert.
D. The first ROLLBACK command restores the 101 rows that were deleted, leaving the inserted row still to be committed.
E. The second ROLLBACK command replays the delete.

Answer: C,D

NEW QUESTION # 229
Examine the data in the CUST_NAME column of the CUSTOMERS table.

You want to extract only those customer names that have three names and display the * symbol in place of the first name as follows:

Which two queries give the required output?

A. SELECT LPAD(SUBSTR(cust_name ' ')),LENGTH(cust_name) - INSTR(cust_name, ' '), '*') "CUST NAME"FROM customersWHERE INSTR(cust_name, ' ',1,2)<>0;
B. SELECT LPAD(SUBSTR(cust_name ' ')),LENGTH(cust_name) - INSTR(cust_name, ' '), '*') "CUST NAME"FROM customersWHERE INSTR(cust_name, ' ',1,-2)<>0;
C. SELECT LPAD(SUBSTR(cust_name, INSTR(cust_name, ' ')),LENGTH(cust_name),'*') "CUST NAME"FROM customersWHERE INSTR(cust_name, ' ',1,2)<>0;
D. SELECT LPAD(SUBSTR(cust_name, INSTR(cust_name, ' ')),LENGTH(cust_name),'*') "CUST NAME"FROM customersWHERE INSTR(cust_name, ' ',-1,2)<>0;

Answer: C,D

NEW QUESTION # 230
Which three statements are true? (Choose three.)

A. The USER_CONS_COLUMNSview should be queried to find the names of columns to which constraints apply.
B. The usernames of all the users including database administrators are stored in the data dictionary.
C. Both USER_OBJECTSand CATviews provide the same information about all objects that are owned by the user.
D. The data dictionary views consist of joins of dictionary base tables and user-defined tables.
E. The data dictionary is created and maintained by the database administrator.
F. Views with the same name but different prefixes, such as DBA, ALLand USER, reference the same base tables from the data dictionary.

Answer: A,B,F

Explanation:
Explanation
Explanation/Reference:
References:
https://docs.oracle.com/cd/B10501_01/server.920/a96524/c05dicti.htm

NEW QUESTION # 231
......

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