View the Exhibit and examine the structure of the PRODUCT, COMPONENT, and PDT_COMP
tables.
In PRODUCT table, PDTNO is the primary key.
In COMPONENT table, COMPNO is the primary key.
In PDT_COMP table, (PDTNO,COMPNO) is the primary key, PDTNO is the foreign key referencing
PDTNO in PRODUCT table and COMPNO is the foreign key referencing the COMPNO in
COMPONENT table.
You want to generate a report listing the product names and their corresponding component names,
if the component names and product names exist.
Evaluate the following query:
SQL>SELECT pdtno,pdtname, compno,compname
FROM product _____________ pdt_comp
USING (pdtno) ____________ component USING(compno)
WHERE compname IS NOT NULL;
Which combination of joins used in the blanks in the above query gives the correct output?
A.
JOIN; JOIN
B.
FULL OUTER JOIN; FULL OUTER JOIN
C.
RIGHT OUTER JOIN; LEFT OUTER JOIN
D.
LEFT OUTER JOIN; RIGHT OUTER JOIN