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Oracle 1z0-071 exam is an intermediate-level certification exam that covers a broad range of SQL topics. 1z1-071 exam requires candidates to have a deep understanding of SQL concepts and experience with the Oracle SQL database management system. 1z1-071 Exam is 90 minutes long, and candidates need to answer 73 questions correctly to pass the exam.

Oracle Database SQL Sample Questions (Q18-Q23):

NEW QUESTION # 18
Examine the structure of the BOOKS_TRANSACTIONS table:

Examine the SQL statement:

Which statement is true about the outcome?

A. It displays details for only members A101 and A102 who have borrowed before today with RM TRANSACTION_TYPE.
B. It displays details only for members who have borrowed before today with RM as TRANSACTION_TYPE.
C. It displays details for members who have borrowed before today's date with either RM as TRANSACTION_TYPE or MEMBER_ID as A101 and A102.
D. It displays details for members who have borrowed before today with RM as TRANSACTION_TYPE and the details for members A101 or A102.

Answer: D

NEW QUESTION # 19
View the exhibit and examine the descriptions of the DEPTand LOCATIONStables.

You want to update the CITYcolumn of the DEPTtable for all the rows with the corresponding value in the CITYcolumn of the LOCATIONStable for each department.
Which SQL statement would you execute to accomplish the task?
UPDATE dept d

A. SET city = (SELECT city
FROM locations l
WHERE d.location_id = l.location_id);
B. SET city = (SELECT city
FROM locations l)
WHERE d.location_id = l.location_id;
UPDATE dept d
C. SET city = ANY (SELECT city
FROM locations l)
UPDATE dept d
D. SET city = ALL (SELECT city
FROM locations l
WHERE d.location_id = l.location_id);
UPDATE dept d

Answer: A

NEW QUESTION # 20
Examine the description of the transactions table:

Which two SQL statements execute successfully?

A. SELECT customer_id AS "CUSTOMER-ID", transaction_date AS "DATE", amount+100 DUES FROM transactions;
B. SELECT customer id AS CUSTOMER-ID, transaction_date AS TRANS_DATE, amount+100 "DUES AMOUNT" FROM transactions;
C. SELECT customer_id AS 'CUSTOMER-ID',transaction_date AS DATE, amount+100 'DUES' from transactions;
D. SELECT customer_id AS "CUSTOMER-ID", transaction_date AS DATE, amount+100 "DUES" from transactions;
E. SELECT customer_id CUSTID, transaction_date TRANS_DATEamount+100 DUES FROM transactions;

Answer: D,E

Explanation:
A). True, this statement will execute successfully. In Oracle SQL, column aliases can be given in double quotes which allows the use of special characters like a hyphen. Additionally, you can perform arithmetic operations such as amount+100 directly in the SELECT clause to return increased values of amount.
C). True, this statement is also valid. It does not use any special characters or reserved keywords as aliases that would require double quotes. The arithmetic operation is the same as in option A, which is permissible.
For B, D, and E, the reasons for failure are: B. In Oracle SQL, single quotes are used for string literals, not for column aliases. Therefore, using single quotes around 'CUSTOMER-ID' and 'DUES' will result in an error. D.
The word "DATE" is a reserved keyword in Oracle SQL. When used as a column alias without double quotes, it will lead to an error. In this statement, although "DATE" is in double quotes, it's a best practice to avoid using reserved keywords as aliases.
E). There are syntax errors in the statement. "customer id" should be "customer_id", and the alias "CUSTOMER-ID" should be enclosed in double quotes if special characters are used. Also, "DUES AMOUNT" as an alias should be in double quotes to be valid because it contains a space.
References:
* Oracle documentation on column aliases: Oracle Database SQL Language Reference
* Oracle reserved words: Oracle Database SQL Language Reserved Words

NEW QUESTION # 21
View the Exhibit and examine the structure of the ORDER_ITEMS table. (Choose the best answer.) You must select the ORDER_ID of the order that has the highest total value among all the orders in the ORDER_ITEMS table.
Which query would produce the desired result?

A. SELECT order_idFROM order_itemsWHERE(unit_price*quantity) = (SELECT MAX (SUM(unit_price*quantity)FROM order_items) GROUP BY order_id);
B. SELECT order_idFROM order_itemsWHERE (unit_price*quantity) = (SELECT MAX(unit_price*quantity)FROM order_itemsGROUP BY order_id)
C. SELECT order_idFROM order_itemsWHERE(unit_price*quantity)
MAX(unit_price*quantity)GROUP BY order_id);
D. SELECT order_idFROM order_itemsGROUP BY order_idHAVING
SUM(unit_price*quantity) = (SELECT MAX (SUM(unit_price*quantity))FROM order_items GROUP BY order_id);

Answer: D

NEW QUESTION # 22
You own table DEPARTMENTS, referenced by views, indexes, and synonyms.
Examine this command which executes successfully:
DROP TABLE departments PURGE;
Which three statements are true?

A. It will remove all views that are based on the DEPARTMENTS table.
B. It will drop all indexes on the DEPARTMENTS table.
C. It will remove all synonyms for the DEPARTMENTS table.
D. It will remove the DE PARTMENTS table from the database.
E. Neither can it be rolled back nor can the DEPARTMENTS table be recovered.
F. It will delete all rows from the DEPARTMENTS table, but retain the empty table.

Answer: B,D,E

NEW QUESTION # 23
......

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