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Oracle Database SQL Sample Questions (Q224-Q229):

NEW QUESTION # 224
View the Exhibit and examine the structure of the PRODUCT_INFORMATION and INVENTORIES tables.

You have a requirement from the supplies department to give a list containing PRODUCT_ID, SUPPLIER_ID, and QUANTITY_ON_HAND for all the products wherein QUANTITY_ON_HAND is less than five.
Which two SQL statements can accomplish the task? (Choose two.)

A. SELECT product_id, quantity_on_hand, supplier_idFROM
product_informationNATURAL JOIN inventories AND quantity_on_hand < 5;
B. SELECT i.product_id, i.quantity_on_hand, pi.supplier_idFROM product_information pi JOIN inventories iON (pi.product_id=i.product_id) AND quantity_on_hand < 5;
C. SELECT i.product_id, i.quantity_on_hand, pi.supplier_idFROM product_information pi JOIN inventories iON (pi.product_id=i.product_id)WHERE quantity_on_hand < 5;
D. SELECT i.product_id, i.quantity_on_hand, pi.supplier_idFROM product_information pi JOIN inventories iON (pi.product_id=i.product_id)USING (product_id) AND quantity_on_hand < 5;

Answer: B,C

NEW QUESTION # 225
Which two statements are true about selecting related rows from two tables based on entity relationship diagram (ERD)?

A. Every relationship between the two tables must be implemented in a Join condition.
B. An inner join relates rows within the same table.
C. Relating data from a table with data from the same table is implemented with a self join.
D. Rows from unrelated tables cannot be joined.
E. Implementing a relationship between two tables might require joining additional tables.

Answer: C,E

NEW QUESTION # 226
Which two statements are true about external tables?

A. DML statements cannot be used on them.
B. Their data can be retrieved by using only SQL or PL/SQL.
C. Indexes can be created on them.
D. You can populate them from existing data in the database by using the CREATE TABLE AS SELECT command.
E. Their metadata and actual data are both stoned outside the database.

Answer: A,D

NEW QUESTION # 227
Examine the description of the CUSTOMERS table:

CUSTNO is the PRIMARY KEY.
You must determine if any customers' details have been entered more than once using a different CUSTNO, by listing all duplicate names.
Which two methods can you use to get the required result?

A. FULL OUTER JOIN with self join
B. self join
C. LEFT OUTER JOIN with self join
D. subquery
E. RIGHT OUTER JOIN with self join

Answer: B,D

NEW QUESTION # 228
View the exhibit and examine the structure of the CUSTOMERS table.

Which two tasks would require subqueries or joins to be executed in a single statement? (Choose two.)

A. finding the number of customers, in each city, whose marital status is 'married'.
B. finding the number of customers, in each city, whose credit limit is more than the average credit limit of all the customers
C. listing of customers who do not have a credit limit and were born before 1980
D. listing of those customers, whose credit limit is the same as the credit limit of customers residing in the city 'Tokyo'.
E. finding the average credit limit of male customers residing in 'Tokyo' or 'Sydney'

Answer: B,D

NEW QUESTION # 229
......

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