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Questions and answers from 1Z0-071 free dumps.
Question 1:
Which three statements are true about performing Data Manipulation Language (DML) operations on a view In an Oracle Database?
A. Insert statements can always be done on a table through a view.
B. The WITH CHECK clause has no effect when deleting rows from the underlying table through the view.
C. Views cannot be used to query rows from an underlying table if the table has a PRIMARY KEY and the PRIMARY KEY columns are not referenced in the defining query of the view.
D. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains the DISTINCT keyword.
E. Views cannot be used to add on modify rows in an underlying table if the defining query of the view contains aggregating functions.
F. Views cannot be used to add rows to an underlying table if the table has columns with NOT NULL constraints lacking default values That are not referenced in the defining query of the view.
Correct Answer: DEF
Question 2:
Which four statements are true about constraints on Oracle tables?
A. A Column can have only one CHECK Constraint.
B. A NOT NULL Constraint can be defined at the table level.
C. A UNIQUE constraint permits NULLS.
D. A PRIMARY KEY Constraint can be added after a table has been created and populated.
E. A CHECK Constraint can refer to values in other rows.
F. A UNIQUE Constraint can use a pre-existing index on the constrained column or columns.
G. A FOREIGN KEY Column can contain NULLS.
Correct Answer: CDFG
Question 3:
Which two queries execute successfully?
A. SELECT NULLIF(100, 100) FROM DUAL
B. SELECT COALESCE(100, NULL, 200) FROM DUAL
C. SELECT NULLIF(100, \’A\’) FROM DUAL
D. SELECT NULLIF(NULL, 100) FROM DUAL
E. SELECT COALESCE(100, \’A\’ ) FROM DUAL
Correct Answer: AB
Question 4:
Which three are true about multiple INSERT statements?
A. They can be performed only by using a subquery.
B. They can be performed on relational tables.
C. They can be performed on views.
D. They can be performed on remote tables.
E. They can be performed on external tables using SQL*Loader.
F. They can insert each computed row into more than one table.
Correct Answer: ABF
Question 5:
Which three are true about granting object privileges on tables, views, and sequences?
A. UPDATE can be granted only on tables and views.
B. DELETE can be granted on tables, views, and sequences.
C. REFERENCES can be granted only on tables and views.
D. INSERT can be granted on tables, views, and sequences.
E. SELECT can be granted only on tables and views.
F. ALTER can be granted only on tables and sequences.
Correct Answer: ACF
Question 6:
Examine the description of the PRODUCTS table Which contains data: Which two are true?
A. The PROD ID column can be renamed.
B. The PROD_ ID column data type can be changed to VARCHAR2 (2).
C. The EXPIRY DATE column data type can be changed to TIME STAMP.
D. The EXPIRY DATE column cannot be dropped.
E. The PROD NAME column cannot have a DEFAULT clause added to it.
Correct Answer: AC
Question 7:
Which two are true about the WITH GRANT OPTION clause?
A. The grantee can grant the object privilege to any user in the database, with of without including this option.
B. The grantee must have the GRANT ANY OBJECT PRIVILEGE system privilege to use this option.
C. It can be used when granting privileges to roles.
D. It can be used for system and object privileges.
E. It cannot be used to pass on privileges to PUBLIC by the grantee.
F. It can be used to pass on privileges to other users by the grantee.
Correct Answer: AF
Question 8:
Which two statements are true about INTERVAL data types
A. INTERVAL YEAR TO MONTH columns only support monthly intervals within a range of years.
B. The value in an INTERVAL DAY TO SECOND column can be copied into an INTERVAL YEAR TO MONTH column.
C. INTERVAL YEAR TO MONTH columns only support monthly intervals within a single year.
D. The YEAR field in an INTERVAL YEAR TO MONTH column must be a positive value.
E. INTERVAL DAY TO SECOND columns support fractions of seconds.
F. INTERVAL YEAR TO MONTH columns support yearly intervals.
Correct Answer: EF
Question 9:
Which two statements are true about Oracle synonyms?
A. A synonym can have a synonym.
B. A synonym has an object number.
C. Any user can create a public synonym.
D. All private synonym names must be unique in the database.
E. A synonym can be created on an object in a package.
Correct Answer: AB
Question 10:
Which two queries execute successfully?
A. SELECT INTERVAL \’1\’ DAY – SYSDATE FROM DUAL;
B. SELECT SYSTIMESTAMP + INTERVAL \’1\’ DAY FROM DUAL;
C. SELECT INTERVAL \’1\’ DAY – INTERVAL \’1\’ MINUTE FROM DUAL;
D. select INTERVAL \’1\’ DAY +INTERVAL \’1\’ MONTH FROM DUAL;
E. SELECT SYSDATE “INTERVAL \’1\’ DAY FROM DUAL;
Correct Answer: BC
Question 11:
Which statement is true about aggregate functions?
A. The AVG function implicitly converts NULLS to zero
B. The MAX and MIN functions can be used on columns with character data types
C. Aggregate functions can be used in any clause of a SELECT statement
D. Aggregate functions can be nested into any number of levels
Correct Answer: B
Question 12:
Which two statements are true about the COUNT function?
A. It can only be used for NUMBER data types.
B. COUNT (DISTINCT inv_amt) returns the number of rows excluding rows containing duplicates and NULLs in the INV_AMT column
C. COUNT(*) returns the number of rows in a table including duplicate rows and rows containing NULLs in any column.
D. A SELECT statement using the COUNT function with a DISTINCT keyword cannot have a WHERE clause.
E. COUNT(inv_amt) returns the number of rows in a table including rows with NULL in the INV_AMT column.
Correct Answer: BC
Question 13:
Which three statements are true about defining relations between tables in a relational database?
A. Foreign key columns allow null values.
B. Unique key columns allow null values
C. Primary key columns allow null values.
D. Every primary or unique key value must refer to a matching foreign key value.
E. Every foreign key value must refer to a matching primary or unique key value.
Correct Answer: ABE
Question 14:
In Which three situations does a new transaction always start?
A. When issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session
B. When issuing a CREATE INDEX statement after a CREATE TABLE statement completed unsuccessfully in the same session
C. When issuing a TRUNCATE statement after a SELECT statement was issued in the same session
D. When issuing a CREATE TABLE statement after a SELECT statement was issued in the same session
E. When issuing the first Data Manipulation Language (OML) statement after a COMMIT or ROLLBACK statement was issued in the same session
F. When issuing a DML statement after a DML statement is filed in the same session.
Correct Answer: ABE
Question 15:
You execute these commands:
CREATE TABLE customers (customer id INTEGER, customer name VARCHAR2 (20));
INSERT INTO customers VALUES (1`Custmoer1 `);
SAVEPOINT post insert;
INSERT INTO customers VALUES (2, \’Customer2 `);
SELECTCOUNT (*) FROM customers;
Which two, used independently, can replace so the query retums 1?
A. ROLLBACK;
B. COMMIT;
C. ROLIBACK TO SAVEPOINT post_ insert;
D. CONOIT TO SAVEPOINT post_ insert;
E. ROLLEBACK TO post_ insert;
Correct Answer: CE
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