Question 156
View the exhibit and examine the description of the PRODUCT_INFORMATION table.

Which SQL statement would retrieve from the table the number of products having LIST_PRICE as NULL?

Which SQL statement would retrieve from the table the number of products having LIST_PRICE as NULL?
Question 157
View the exhibit and examine the data in ORDERS_MASTER and MONTHLY_ORDERS tables.

Evaluate the following MERGE statement:
MERGE_INTO orders_master o
USING monthly_orders m
ON (o.order_id = m.order_id)
WHEN MATCHED THEN
UPDATE SET o.order_total = m.order_total
DELETE WHERE (m.order_total IS NULL)
WHEN NOT MATCHED THEN
INSERT VALUES (m.order_id, m.order_total);
What would be the outcome of the above statement?

Evaluate the following MERGE statement:
MERGE_INTO orders_master o
USING monthly_orders m
ON (o.order_id = m.order_id)
WHEN MATCHED THEN
UPDATE SET o.order_total = m.order_total
DELETE WHERE (m.order_total IS NULL)
WHEN NOT MATCHED THEN
INSERT VALUES (m.order_id, m.order_total);
What would be the outcome of the above statement?
Question 158
Sales data of a company is stored in two tables, SALES1and SALES2, with some data being duplicated across the tables. You want to display the results from the SALES1table, which are not present in the SALES2table.
SALES1 table
Name Null Type
------------------ ------------- ----------------
SALES_ID NUMBER
STORE_ID NUMBER
ITEMS_ID NUMBER
QUANTITY NUMBER
SALES_DATE DATE
SALES2 table
Name Null Type
---------------- ------------- -----------------
SALES_ID NUMBER
STORE_ID NUMBER
ITEMS_ID NUMBER
QUANTITY NUMBER
SALES_DATE DATE
Which set operator generates the required output?
SALES1 table
Name Null Type
------------------ ------------- ----------------
SALES_ID NUMBER
STORE_ID NUMBER
ITEMS_ID NUMBER
QUANTITY NUMBER
SALES_DATE DATE
SALES2 table
Name Null Type
---------------- ------------- -----------------
SALES_ID NUMBER
STORE_ID NUMBER
ITEMS_ID NUMBER
QUANTITY NUMBER
SALES_DATE DATE
Which set operator generates the required output?
Question 159
Examine the business rule:
Each student can work on multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME
PROJECT_TASK
Which two statements are true in this scenario?
Each student can work on multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME
PROJECT_TASK
Which two statements are true in this scenario?
Question 160
Which two are true about scalar subquery expressions? (Choose two.)
