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Oracle Database SQL Sample Questions (Q45-Q50):

NEW QUESTION # 45
View the exhibit and examine the structure of the PROMOTIONS table.
You have to generate a report that displays the promo name and start date for all promos that started after the last promo in the 'INTERNET' category.
Which query would give you the required output?

A. SELECT promo_name, promo_begin_date FROM promotionsWHERE
promo_begin_date> ALL (SELECT MAX (promo_begin_date)FROM promotions)
ANDpromo_category= 'INTERNET';
B. SELECT promo_name, promo_begin_date FROM promotionsWHERE
promo_begin_date> ANY (SELECT promo_begin_dateFROM promotionsWHERE
promo_category= 'INTERNET');
C. SELECT promo_name, promo_begin_date FROM promotionsWHERE
promo_begin_date > ALL (SELECT promo_begin_dateFROM promotionsWHERE
promo_category = 'INTERNET');
D. SELECT promo_name, promo_begin_date FROM promotionsWHERE
promo_begin_date IN (SELECT promo_begin_dateFROM promotionsWHERE
promo_category= 'INTERNET');

Answer: C

NEW QUESTION # 46
View the exhibit and examine the structure of ORDERSand CUSTOMERStables.

Which INSERT statement should be used to add a row into the ORDERStable for the customer whose CUST_LAST_NAMEis Robertsand CREDIT_LIMITis 600? Assume there exists only one row with CUST_LAST_NAME as Roberts and CREDIT_LIMIT as 600.
INSERT INTO (SELECT o.order_id, o.order_date, o.order_mode, c.customer_id,

A. VALUES (1,'10-mar-2007', 'direct',
(SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
INSERT INTO orders (order_id, order_date, order_mode,
B. (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total)
VALUES (1,'10-mar-2007', 'direct', &customer_id, 1000);
INSERT INTO orders
C. o.order_total
FROM orders o, customers c
WHERE o.customer_id = c.customer_id AND c.cust_last_name='Roberts' AND
c.credit_limit=600)
VALUES (1,'10-mar-2007', 'direct', (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
INSERT INTO orders (order_id, order_date, order_mode,
D. (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total)
VALUES (1,'10-mar-2007', 'direct', &&customer_id, 1000);

Answer: A

NEW QUESTION # 47
Which statements are true regarding primary and foreign key constraints and the effect they can have on table data?

A. It is possible for child rows that have a foreign key to be deleted automatically from the child table at the time the parent row is deleted.
B. The foreign key columns and parent table primary key columns must have the same names.
C. Primary key and foreign key constraints can be defined at both the column and table level.
D. It is possible for child rows that have a foreign key to remain in the child table at the time the parent row is deleted.
E. A table can have only one primary key and one foreign key.
F. A table can have only one primary key but multiple foreign keys.
G. Only the primary key can be defined the column and table level.

Answer: A,C,F

Explanation:
Regarding primary and foreign key constraints:
A . A table can have only one primary key but multiple foreign keys. This is true. A table is constrained to have only one primary key, which can consist of multiple columns, but can have several foreign keys referencing primary keys in other tables.
C . Primary key and foreign key constraints can be defined at both the column and table level. True. Constraints can be defined inline with the column definition or separately at the end of the table definition.
E . It is possible for child rows that have a foreign key to be deleted automatically from the child table at the time the parent row is deleted. This is also true if the foreign key is defined with the ON DELETE CASCADE option.
Options B, D, F, and G are incorrect:
B is incorrect because if a parent row is deleted, the child rows cannot remain without violating the integrity unless the foreign key is defined with ON DELETE SET NULL or similar behavior.
D is incorrect because both primary and foreign key constraints can be defined at both levels.
F is incorrect as the names of the foreign key columns do not need to match the primary key column names.
G is incorrect as a table can have multiple foreign keys.

NEW QUESTION # 48
Which two statements are true about the rules of precedence for operators? (Choose two.)

A. Arithmetic operators with equal precedence area evaluated from left to right within an expression
B. NULLS influence the precedence of operators in an expression
C. The + binary operator has the highest precedence in an expression in a SQL statement
D. The concatenation operator | | is always evaluated before addition and subtraction in an expression
E. Multiple parentheses can be used to override the default precedence of operators in an expression

Answer: A,E

NEW QUESTION # 49
View the exhibit and examine the structure in ORDERSand ORDER_ITEMStables.

You need to create a view that displays the ORDER_ID, ORDER_DATE, and the total number of items in each order.
Which CREATEVIEWstatement would create the views successfully?

A. CREATE OR REPLACE VIEW ord_vu
AS SELECT o.order_id, o.order_date, COUNT (i.line_item_id)
FROM orders o JOIN order_items i
ON (o.order_id = i.order_id)
GROUP BY o.order_id, o.order_date;
B. CREATE OR REPLACE VIEW ord_vu (order_id, order_date)
AS SELECT o.order_id, o.order_date, COUNT (i.line_item_id)
" NO OF ITEMS"
FROM orders o JOIN order_items i
ON (o.order_id = i.order_id)
GROUP BY o.order_id, o.order_date;
C. CREATE OR REPLACE VIEW ord_vu
AS SELECT o.order_id, o.order_date, COUNT (i.line_item_id) ||
"NO OF ITEMS"
FROM orders o JOIN order_items i
ON (o.order_id = i.order_id)
WHITH CHECK OPTION;
D. CREATE OR REPLACE VIEW ord_vu
AS SELECT o.order_id, o.order_date, COUNT (i.line_item_id)
" NO OF ITEMS"
FROM orders o JOIN order_items i
ON (o.order_id = i.order_id)
GROUP BY o.order_id, o.order_date;

Answer: D

NEW QUESTION # 50
......

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Oracle Database SQL Sample Questions (Q45-Q50):

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