Free Access Oracle.1z1-071.v2022-04-30.q200 Practice Test (Page 11)

Question 46

View the exhibit and examine the data in ORDERS_MASTERand MONTHLY_ORDERStables.

Evaluate the following MERGEstatement:
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?

A.The ORDERS_MASTERtable would contain the ORDER_IDs1, 2, 3 and 4.

B.The ORDERS_MASTERtable would contain the ORDER_IDs1, 2 and 4.

C.The ORDERS_MASTERtable would contain the ORDER_IDs1, 2 and 3.

D.The ORDERS_MASTERtable would contain the ORDER_IDs1 and 2.

Question 47

Which three statements are true about Structured Query Language (SQL)?

A.It guarantees atomicity, consistency, isolation, and durability (ACID) features

B.It is used to define encapsulation and polymorphism for a relational table

C.It provides independence for logical data structures being manipulated from the underlying physical data storage

D.It requires that data be contained in hierarchical data storage

E.It is the only language that can be used for both relational and object-oriented databases

F.It best supports relational databases

Question 48

Which three statements are true reading subqueries? (Choose three.)

A.Multiple columns or expressions can be compared between the subquery and main query.

B.The subquery and main query can retrieve data from different tables.

C.The subquery and main query must retrieve date from the same table.

D.A subquery can have more than one main query.

E.Only one column or expression can be compared between the subquery and main query.

F.A Main query can have many subqueries.

Question 49

Examine the description of the transactions table:
Which two SQL statements execute successfully?

A.SELECT customer_id CUSTID, transaction_date TRANS_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 AS "CUSTOMER-ID", transaction_date AS "DATE", amount+100 DUES FROM transactions;

Question 50

Which three are true about privileges and roles? (Choose three.)

A.A role is owned by the user who created it.

B.A role can contain a combination of several privileges and roles.

C.System privileges always set privileges for an entire database.

D.A user has all object privileges for every object in their schema by default.

E.All roles are owned by the SYS schema.

F.PUBLICcan be revoked from a user.

G.PUBLIC acts as a default role granted to every user in a database.

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