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Oracle 1z0-071 exam, also known as the Oracle Database SQL exam, is a certification exam offered by Oracle Corporation. It is designed to test the knowledge and skills of SQL developers, database administrators, and database analysts who work with Oracle databases. Passing 1z1-071 exam is a requirement for earning the Oracle Database SQL Certified Associate certification.
NEW QUESTION # 180
Which three actions can you perform by using the ORACLE DATAPUMP access driver?
- A. Query data from an external table.
- B. Read data from an external table and load it into a table in the database.
- C. Read data from a table in the database and insert it into an external table.
- D. Execute DML statements on an external table.
- E. Create a directory object for an external table.
- F. Create a directory object for a flat file.
Answer: A,C,E
NEW QUESTION # 181
Evaluate the following CREATE SEQUENCEstatement:
CREATE SEQUENCE seq1
START WITH 100
INCREMENT BY 10
MAXVALUE 200
CYCLE
NOCACHE;
The sequence SEQ1has generated numbers up to the maximum limit of 200. You issue the following SQL statement:
SELECT seq1.nextval FROM dual;
What is displayed by the SELECTstatement?
- A. 0
- B. 1
- C. 2
- D. an error
Answer: A
NEW QUESTION # 182
View the exhibits and examine the structures of the COSTSand PROMOTIONStables.
Evaluate the following SQL statement:
SQL> SELECT prod_id FROM costs
WHERE promo_id IN (SELECT promo_id FROM promotions
WHERE promo_cost < ALL
( SELECT MAX(promo_cost) FROM promotions
GROUP BY (promo_end_date-
promo_begin_date)));
What would be the outcome of the above SQL statement?
- A. It displays prod IDs in the promos with the highest cost in the same time interval.
- B. It displays prod IDs in the promo with the lowest cost.
- C. It displays prod IDs in the promos with the lowest cost in the same time interval.
- D. It displays prod IDs in the promos which cost less than the highest cost in the same time interval.
Answer: D
NEW QUESTION # 183
Examine the structure of the EMPLOYEES table.
You must display the details of employees who have manager with MANAGER_ID 100, who were hired in the past 6 months and who have salaries greater than 10000.
Which query would retrieve the required result?
- A. SELECT last_name, hire_date, salary
FROM employees
WHERE manager_id = (SELECT employee_id FROM employees WHERE employee_id = '100') UNION SELECT last_name, hire_date, salary FROM employees WHERE hire_date > SYSDATE -180 INTERSECT SELECT last_name, hire_date, salary FROM employees WHERE salary > 10000; - B. SELECT last_name, hire_date, salary
FROM employees
WHERE manager_id = (SELECT employee_id FROM employees WHERE employee_id = 100) UNION ALL (SELECT last_name, hire_date, salary FROM employees WHERE hire_date > SYSDATE -180 INTERSECT SELECT last_name, hire_date, salary FROM employees WHERE salary > 10000); - C. (SELECT last_name, hire_date, salary
FROM employees
WHERE salary > 10000
UNION ALL
SELECT last_name, hire_date, salary
FROM employees
WHERE manager_ID = (SELECT employee_id FROM employees WHERE employee_id = 100)) UNION SELECT last_name, hire_date, salary FROM employees WHERE hire_date > SYSDATE -180; - D. SELECT last_name, hire_date, salary
FROM employees
WHERE salary > 10000
UNION ALL
SELECT last_name, hire_date, salary
FROM employees
WHERE manager_ID = (SELECT employee_id FROM employees WHERE employee_id = 100) INTERSECT SELECT last_name, hire_date, salary FROM employees WHERE hire_date > SYSDATE- 180;
Answer: A
NEW QUESTION # 184
In your session, the NLS._DAE_FORMAT is DD- MM- YYYY.There are 86400 seconds in a day.Examine this result:
DATE
02-JAN-2020
Which statement returns this?
- A. SELECT To CHAR(TO _DATE('29-10-2019') + INTERVAL '2' NONTH + INTERVAL '5' DAY INEERVAL '120' SECOND, ' DD-MON-YYY) AS "date" FROM DUAL;
- B. SELECT TO_ CHAR(TO_ DATE('29-10-2019') + INTERVAL '3' MONTH + INTERVAL '7' DAY - INTERVAL '360' SECOND, ' DD-MON-YYYY') AS "date" FROM DUAL;
- C. SELECT-TO_CHAR(TO _DATE('29-10-2019'+ INTERVAL '2' MONTH+INTERVAL '6' DAYINTERVAL
'120' SECOND, 'DD-MON-YY') AS "daTe"
FROM DUAL; - D. SELECT-TO_CHAR(TO _DATE('29-10-2019'+ INTERVAL '2' MONTH+INTERVAL '4' DAYINTERVAL
'120' SECOND, 'DD-MON-YY') AS "daTe"
FROM DUAL; - E. SELECT TO_ CHAR(TO_ DATE('29-10-2019') +INTERVAL '2'; MONTH + INTERVAL '5'; DAY
-
INTERVAL '86410' SECOND, ' DD-MON-YYYY') AS "date"
FROM DUAL;
Answer: B
Explanation:
To calculate the date from a given base date with intervals, Oracle allows you to add or subtract intervals from dates. Since the NLS_DATE_FORMAT is set to DD-MM-YYYY, the output is expected to be in that format.
Option B seems to calculate a date that is 3 months and 7 days ahead of October 29, 2019, and then subtracts
360 seconds (which is 6 minutes), resulting in a time that is still within the same day.
Here's how the calculation in option B would work out:
* Start date: 29-10-2019
* Add 3 months: 29-01-2020
* Add 7 days: 05-02-2020
* Subtract 360 seconds: Since it's only a few minutes, the date remains 05-02-2020.
However, this does not match the provided result of 02-JAN-2020. We would need to consider the exact amount of time being subtracted or added to find the correct answer.
But upon reviewing the options, they all have various syntax errors such as a missing TO_CHAR function, incorrect quotes, and date formats not matching the session's NLS_DATE_FORMAT. Therefore, we would need to correct these issues to find the right answer.
NEW QUESTION # 185
The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE NLS_DATE_FORMAT is set to DD-MON-RR.
Which two are true about data type conversions involving these columns in query expressions?
- A. qty_sold BETWEEN '101' AND '110': uses implicit conversion
- B. invoice_date> '01-02-2019': uses implicit conversion
- C. qty_sold ='05549821 ': requires explicit conversion
- D. CONCAT(qty_sold, invoice_date): requires explicit conversion
- E. invoice_date = '15-march-2019': uses implicit conversion
Answer: A,E
NEW QUESTION # 186
In which three situations does a new transaction always start?
- A. When issuing a CREATE INDEX statement after a CREATE TABLE statement completed unsuccessfully in the same session
- B. When issuing a TRUNCATE statement after a SELECT statement was issued in the same session
- C. When issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session
- D. When issuing the first Data Manipulation Language (OML) statement after a COMMIT or ROLLBACK statement was issued in the same session
- E. When issuing a DML statement after a DML statement filed in the same session.
- F. When issuing a CREATE TABLE statement after a SELECT statement was issued in the same session
Answer: B,C,D
Explanation:
Substitution variables in Oracle are used to replace a value dynamically during the execution of SQL statements. The behavior of these variables is well-documented:
* C. A substitution variable prefixed with & always prompts only once for a value in a session: This is true. In a session, when you use a single ampersand (&), SQL*Plus or SQL Developer will prompt for the value the first time the variable is encountered. The value for this variable will then be reused for the remainder of the session unless it is redefined.
* D. A substitution variable can be used with any clause in a SELECT statement: Substitution
* variables can be placed in any part of a SQL statement, including the SELECT, WHERE, GROUP BY, ORDER BY, etc. They are not limited to any specific clause.
References:
* Oracle SQL*Plus User's Guide and Reference, which discusses substitution variables.
NEW QUESTION # 187
Which three actions can you perform by using the ALTER TABLE command?
- A. Enable or disable constraints on a table.
- B. Restrict all DML statements on a table.
- C. Drop all columns simultaneously from a table.
- D. Drop pseudocolumns from a table.
- E. Lock a set of rows in a table.
- F. Rename a table.
Answer: A,C,F
NEW QUESTION # 188
Which three statements are true about sequences in a single instance Oracle database? (Choose three.)
- A. A sequence can issue duplicate values
- B. A sequence can only be dropped by a DBA
- C. A sequence number that was allocated can be rolled back if a transaction fails
- D. A sequence's unallocated cached value are lost if the instance shuts down
- E. Two or more tables cannot have keys generated from the same sequence
- F. Sequences can always have gaps
Answer: A,D,E
NEW QUESTION # 189
Examine the structure of the BOOKS_TRANSACTIONStable:
You want to display the member IDs, due date, and late fee as $2 for all transactions.
Which SQL statement must you execute?
- A. SELECT member_id AS MEMBER_ID, due_date AS DUE_DATE, $2 AS LATE_FEE FROM BOOKS_TRANSACTIONS
- B. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", $2 AS "LATE FEE" FROM BOOKS_TRANSACTIONS
- C. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", '$2' AS "LATE FEE" FROM BOOKS_TRANSACTIONS
- D. SELECT member_id 'MEMBER ID', due_date 'DUE DATE', '$2 AS LATE FEE' FROM BOOKS_TRANSACTIONS;
Answer: C
NEW QUESTION # 190
Which two statements are true about the results of using the INTERSECT operator in compound queries?
- A. INTERSECT returns rows common to both sides of the compound query.
- B. INTERSECT ignores NULLs.
- C. Reversing the order of the intersected tables can sometimes affect the output.
- D. The number of columns in each SELECT in the compound query can be different.
- E. Column names in each SELECT in the compound query can be different.
Answer: B,E
NEW QUESTION # 191
Which three actions can you perform by using the ORACLE_DATAPUMP access driver?
- A. Read data from a table in the database and insert it into an external table.
- B. Execute DML statements on an external table.
- C. Create a directory object for an external table.
- D. Create a directory object for a flat file.
- E. Read data from an external table and load it into a table in the database.
- F. Query data from an external table.
Answer: A,E
NEW QUESTION # 192
Which two statements are true about the DUAL table? (Choose two.)
- A. It can display multiple rows but only a single column.
- B. It can be used to display only constants or pseudo columns.
- C. It can be accessed only by the SYS user.
- D. It consists of a single row and single column of VARCHAR2data type.
- E. It can be accessed by any user who has the SELECT privilege in any schema.
- F. It can display multiple rows and columns.
Answer: D,E
NEW QUESTION # 193
View the Exhibit and examine the structure of the CUSTOMERS and CUST_HISTORY tables.
The CUSTOMERS table contains the current location of all currently active customers. The CUST_HISTORY table stores historical details relating to any changes in the location of all current as well as previous customers who are no longer active with the company.
You need to find those customers who have never changed their address.
Which SET operator would you use to get the required output?
- A. INTERSECT
- B. UNION
- C. UNION ALL
- D. MINUS
Answer: D
NEW QUESTION # 194
Which two statements are true regarding the GROUP BYclause in a SQL statement? (Choose two.)
- A. If the SELECTclause has an aggregate function, then those individual columns without an aggregate function in the SELECTclause should be included in the GROUP BYcause.
- B. You can use column alias in the GROUP BYclause.
- C. Using the WHEREclause before the GROUP BYclause excludes the rows before creating groups.
- D. Using the WHEREclause after the GROUP BYclause excludes the rows after creating groups.
- E. The GROUP BYclause is mandatory if you are using an aggregate function in the SELECTclause.
Answer: A,C
NEW QUESTION # 195
Which three statements are true about the Oracle join and ANSI join syntax? (Choose three.)
- A. The Oracle join syntax supports creation of a Cartesian product of two tables.
- B. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax.
- C. The Oracle join syntax supports natural joins.
- D. The SQL:1999 compliant ANSI join syntax supports natural joins.
- E. The Oracle join syntax performs less well than the SQL:1999 compliant ANSI join syntax.
- F. The SQL:1999 compliant ANSI join syntax supports creation of a Cartesian product of two tables.
- G. The Oracle join syntax only supports right outer joins.
Answer: C,D,F
Explanation:
Explanation/Reference: http://www.dba-oracle.com/oracle_tips_iso99_joins.htm
NEW QUESTION # 196
In which normal form is a table, if it has no multi-valued attributes and no partial dependencies?
- A. second normal form
- B. fourth normal form
- C. third normal form
- D. first normal form
Answer: A
Explanation:
References:
https://blog.udemy.com/database-normal-forms/
NEW QUESTION # 197
Which two statements are true regarding constraints? (Choose two.)
- A. A foreign key cannot contain NULL values.
- B. A constraint is enforced only for the INSERT operation on a table.
- C. All the constraints can be defined at the column level as well as the table level
- D. A column with the UNIQUE constraint can contain NULL.
- E. A constraint can be disabled even if the constraint column contains data.
Answer: D,E
NEW QUESTION # 198
See the Exhibit and examine the structure of the PROMOTIONS table:
Using the PROMOTIONS table,
you need to find out the average cost for all promos in the range $0-2000 and $2000-5000 in category A.
You issue the following SQL statements:
What would be the outcome?
- A. It executes successfully and gives the required result.
- B. It generates an error because CASE cannot be used with group functions.
- C. It generates an error because NULL cannot be specified as a return value.
- D. It generates an error because multiple conditions cannot be specified for the WHEN clause.
Answer: A
Explanation:
CASE Expression
Facilitates conditional inquiries by doing the work of an IF-THEN-ELSE statement:
CASE expr WHEN comparison_expr1 THEN return_expr1
[WHEN comparison_expr2 THEN return_expr2
WHEN comparison_exprn THEN return_exprn
ELSE else_expr]
END
NEW QUESTION # 199
Which three statements are true about external tables?
- A. Their metadata Is stored In the database.
- B. They can be used In queries containing sorts.
- C. DML statements can modify them.
- D. They can be indexed.
- E. They can be temporary tables.
- F. They can be used in queries containing Joins.
Answer: A,B,F
NEW QUESTION # 200
Which statement is true about transactions?
- A. A combination of DDL and DML statements executed in a sequence ending with a COMMIT forms a single transaction.
- B. A set of DDL statements executed in a sequence ending with a COMMIT forms a single transaction.
- C. A set of Data Manipulation Language (DML) statements executed in a sequence ending with a SAVEPOINT forms a single transaction.
- D. Each Data Definition Language (DDL) statement executed forms a single transaction.
Answer: A
NEW QUESTION # 201
......
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