Free Access Oracle.1z0-071.v2023-10-02.q276 Practice Test (Page 6)

Question 21

You want to display the date for the first Monday of the next month and issue the following command:

What is the outcome?

A.In generates an error because rrrrshould be replaced by rrin the format string.

B.It executes successfully but does not return the correct result.

C.It executes successfully and returns the correct result.

D.In generates an error because TO_CHARshould be replaced with TO_DATE.

E.In generates an error because fmand double quotation marks should not be used in the format string.

Question 22

You issued this command:

Which three statements are true? (Choose three.)

A.Views referencing HR.EMPLOYEESare dropped.

B.All constraints defined on HR.EMPLOYEESare dropped.

C.Sequences used to populate columns in the HR.EMPLOYEEStable are dropped.

D.The HR.EMPLOYEEStable may be moved to the recycle bin.

E.All indexes defined on HR.EMPLOYEESare dropped.

F.Synonyms for HR.EMPLOYEESare dropped.

Question 23

Which statement is true regarding external tables?

A.The data and metadata for an external table are stored outside the database.

B.ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.

C.The CREATE TABLE AS SELECT statement can be used to unload data into regular table in the database from an external table.

D.The default REJECT LIMIT for external tables is UNLIMITED.

Question 24

Evaluate the following CRTEATE TABLE commands:
CREATE_TABLE orders
(ord_no NUMBER (2) CONSTRAINT ord_pk PRIMARY KEY,
ord_date DATE,
cust_id NUMBER (4) );
CREATE TABLE ord_items
(ord _no NUMBER (2),
item_no NUMBER(3),
qty NUMBER (3) CHECK (qty BETWEEEN 100 AND 200),
expiry_date date CHECK (expiry_date> SYSDATE),
CONSTRAINT it_pk PRIMARY KEY (ord_no, item_no),
CONSTARAINT ord_fk FOREIGN KEY (ord_no) REFERENCES orders (ord_no) );
The above command fails when executed. What could be the reason?

A.SYSDATE cannot be used with the CHECK constraint.

B.The CHECK constraint cannot be placed on columns having the DATE data type.

C.The BETWEEN clause cannot be used for the CHECK constraint.

D.ORD_NO and ITEM_NO cannot be used as a composite primary key because ORD_NO is also the FOREIGN KEY.

Question 25

Which three statements are correct regarding indexes? (Choose three.)

A.A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically attempts to create 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, corresponding indexes are automatically dropped.

D.For each DML operation performed on a table, the corresponding indexes are automatically updated if required.

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Question 21

Question 22

Question 23

Question 24

Question 25

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