Online Access Free Oracle.1z1-071.v2022-04-29.q239 Practice Test (Page 34)

1z1-071 Exam Question 161

Examine these statements and the result:
CREATE SEQUENCE customer_seq CACHE 10;
SELECT customer_seq. NEXTVAL FROM DUAL; NEXTVAL
1
Now examine this command:
ALTER SEQUENCE customer_soq <MISaiNG CLAUSE>;
What must replace missing clause for customer_seq. nfxtvai. to return 11?

A.cycle 11

B.MINVALUE 11

C.START WITH 11

D.NOCACHE

E.INCREMENT BY 10

1z1-071 Exam Question 162

Which two are true about virtual columns?

A.They cannot have a data type explicitly specified.

B.They can be indexed.

C.They can be referenced in the column expression of another virtxial column.

D.They can be referenced in the set clause of an update statement as the name of the column To be updated.

E.They can be referenced In the where clause of an update or debete statement.

1z1-071 Exam Question 163

View the Exhibit and examine the structure of CUSTOMERS table.

Evaluate the following query:

Which statement is true regarding the above query?

A.It executes successfully.

B.It produces an error because the condition on the CUST_FIRST_NAME column is not valid.

C.It produces an error because the condition on the CUST_CITY column is not valid.

D.It produces an error because conditions on the CUST_CREDIT_LIMIT column are not valid.

1z1-071 Exam Question 164

View the exhibit and examine the description of the PRODUCT_INFORMATIONtable.

Which SQL statement would retrieve from the table the number of products having LIST_PRICEas NULL?
SELECT COUNT (DISTINCT list_price)

A.FROM product_information
WHERE list_price i= NULL
SELECT COUNT (list_price)

B.FROM product_information
WHERE list_price is NULL

C.FROM product_information
WHERE list_price is NULL
SELECT COUNT (NVL(list_price, 0))

D.FROM product_information
WHERE list_price is NULL
SELECT COUNT (list_price)

1z1-071 Exam Question 165

Which statements are correct regarding indexes? (Choose all that apply.)

A.A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically attempts to creates a unique index.

B.Indexes should be created on columns that are frequently referenced as part of any expression.

C.When a table is dropped, the corresponding indexes are automatically dropped.

D.For each DML operation performed, the corresponding indexes are automatically updated.

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