1z1-071 Dumps To Pass Oracle Exam in 24 Hours - VCEDumps [Q178-Q197]

1z1-071 Dumps To Pass Oracle Exam in 24 Hours - VCEDumps

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NEW QUESTION # 178
View the exhibit and examine the description of the PRODUCT_INFORMATION table.
Which SQL statement would retrieve from the table the number of products having LIST_PRICE as NULL?

• A. SELECT COUNT (list_price)FROM product_informationWHERE list_price i= NULL
• B. SELECT COUNT (DISTINCT list_price)FROM product_informationWHERE list_price is NULL
• C. SELECT COUNT (NVL(list_price, 0))FROM product_informationWHERE list_price is NULL
• D. SELECT COUNT (list_price)FROM product_informationWHERE list_price is NULL

Answer: C

NEW QUESTION # 179
Which two are true about transactions in the Oracle Database?

• A. An uncommitted transaction is automatically committed when the user exits SQL*PLUS
• B. DDL statements automatically commit only data dictionary updates caused by executing the DDL.
• C. A DDL statement issued by a session with an uncommitted transation automaticall commits that transaction.
• D. DML statements always start new transactions.
• E. A session can see uncommitted updates made by the same user in a different session

Answer: C,D

Explanation:
B). True. DDL (Data Definition Language) statements in Oracle Database are auto-commit statements. This means that if a DDL statement is issued, any uncommitted transactions in the same session will automatically be committed.
D). False. This is a common misconception. DML (Data Manipulation Language) statements do not automatically start new transactions. In Oracle, a transaction begins when the first DML statement (INSERT, UPDATE, DELETE, MERGE, SELECT FOR UPDATE) is encountered after a previous transaction has been committed or rolled back.
A is incorrect because DDL statements automatically commit the entire transaction, not just the data dictionary updates. C is incorrect because an uncommitted transaction is not automatically committed when a user exits SQL*Plus; instead, it is rolled back. E is incorrect because a session cannot see uncommitted updates made by other sessions.

NEW QUESTION # 180
View the exhibit and examine the description of the EMPLOYEES table. (Choose two.)

You executed this SQL statement:
SELECT first_name, department_id, salary
FROM employees
ORDER BY department_id, first_name, salary desc;
Which two statements are true regarding the result? (Choose two.)

• A. The values in the SALARY column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID column.
• B. The values in the FIRST_NAME column would be returned in ascending order for all employees having the same value in the DEPARTMENT_ID column.
• C. The values in the SALARY column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID and FIRST_NAME column.
• D. The values in the FIRST_NAME column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID column.
• E. The values in all columns would be returned in descending order.

Answer: B,C

NEW QUESTION # 181
Examine the structure of the PROMOTIONS table:

Management requires a report of unique promotion costs in each promotion category.
Which query would satisfy this requirement?

• A. SELECT DISTINCT promo_cost, promo_category FROM promotions;
• B. SELECT DISTINCT promo_cost, DISTINCT promo_category FROM promotions;
• C. SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1;
• D. SELECT promo_category, DISTINCT promo_cost FROM promotions;

Answer: C

NEW QUESTION # 182
Evaluate the following SQL statement
SQL>SELECT promo_id, prom _category FROM promotions
WHERE promo_category='Internet' ORDER BY promo_id
UNION
SELECT promo_id, promo_category FROM Pomotions
WHERE promo_category = 'TV'
UNION
SELECT promoid, promocategory FROM promotions WHERE promo category='Radio' Which statement is true regarding the outcome of the above query?

• A. It produces an error because positional, notation cannot be used in the ORDER BY clause with SBT operators.
• B. It executes successfully and displays rows in the descend ignore of PROMO CATEGORY.
• C. It executes successfully but ignores the ORDER BY clause because it is not located at the end of the compound statement.
• D. It produces an error because the ORDER BY clause should appear only at the end of a compound query-that is, with the last SELECT statement.

Answer: C

Explanation:
* C. It executes successfully but ignores the ORDER BY clause because it is not located at the end of the compound statement: The ORDER BY clause in a compound query using UNION should be placed at the very end of the final SELECT statement. Since it's located with the first SELECT, it will be ignored.

NEW QUESTION # 183
What is true about non-equijoin statement performance?

• A. The join syntax used makes no difference to performance.
• B. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax.
• C. The BETWEEN condition always performs less well than using the >= and <= conditions.
• D. The BETWEEN condition always performs better than using the >= and <= conditions.
• E. Table aliases can improve performance.

Answer: A,E

NEW QUESTION # 184
Evaluate the following statement.

Which statement is true regarding the evaluation of rows returned by the subquery in the INSERT statement?

• A. Each row is evaluated by the first WHEN clause and if the condition is false then the row would be evaluated by the subsequent WHEN clauses.
• B. The INSERT statement will return an error because the ELSE clause is missing.
• C. Each row is evaluated by the first WHEN clause and if the condition is true, then the row would be evaluated by the subsequent WHEN clauses.
• D. All rows are evaluated by all the three WHEN clauses.

Answer: D

NEW QUESTION # 185
Which two statements are true regarding a SAVEPOINT? (Choose two.)

• A. Rolling back to a SAVEPOINT can undo a TRUNCATE statement
• B. Only one SAVEPOINT may be issued in a transaction
• C. Rolling back to a SAVEPOINT can undo a CREATE INDEX statement
• D. Rolling back to a SAVEPOINT can undo a DELETE statement
• E. A SAVEPOINT does not issue a COMMIT

Answer: D,E

NEW QUESTION # 186
Examine the description of the SALES1 table:

SALES2 is a table with the same description as SALES1.
Some sales data is duplicated in both tables.
You want to display the rows from the SALES1 table which are not present in the SALES2 table.
Which set operator generates the required output?

• A. SUBTRACT
• B. INTERSECT
• C. UNION
• D. MINUS
• E. UNION ALL

Answer: D

NEW QUESTION # 187
View the Exhibits and examine PRODUCTS and SALES tables.

You issue the following query to display produce name and the number of times the product has been sold:
SQL>SLECT p. PROD_name, i . item _cnt
FROM (SELECT prod_id =, count (*) item_cnt
FROMm sales
GROUP BY prod_id) I RIGHT OUTER JION products p
On i. prod _id =.prod_id;
What happens when the above statement is executed?

• A. The statement produces an error ITEM_CNT cannot be displayed in the outer query.
• B. The statement produce an error because a subquery in the FROM clause and outer-jions cannot be together.
• C. The statement produces an error because the GROUP By clause cannot be usesd in a subquery in the FROM clause.
• D. the statement executes successfully and produces the required output.

Answer: D

NEW QUESTION # 188
Which three queries use valid expressions?

• A. SELECT product_id,(unit_price * 0.15 / (4.75 + 552.25)) FROM products;
• B. SELECT product_id,unit_price || 5 "Discount" , unit_price + surcharge - discount FROM products;
• C. SELECT product_id, unit_price, unit_price + surcharge FROM products;
• D. SELECT product_id,unit_price,5 "Discount", unit_price + surcharge-discount FROM products;
• E. SELECT product_id, expiry_date * 2 from products;
• F. SELECT product_id,(expiry_date - delivery_date) * 2 FROM products;

Answer: A,C,F

Explanation:
When evaluating whether expressions in SQL queries are valid, consider data type compatibility and the operations performed:
* Option A: Valid. The expression performs arithmetic operations (multiplication and division) on numeric data types (unit_price, constants). These operations are allowed and make sense in a mathematical context.
* Option B: Valid. This query calculates the difference between two dates (expiry_date and delivery_date), which results in a numeric value representing the number of days between the dates. The result is then multiplied by 2, which is a valid operation on a numeric result.
* Option C: Invalid. The expression unit_price || 5 attempts to concatenate a numeric value with a number, which is not valid without explicit conversion to a string. Moreover, the use of quotes around
"Discount" is syntactically incorrect in this context.
* Option D: Invalid. The expression expiry_date * 2 attempts to multiply a DATE datatype by a numeric value, which is not a valid operation.
* Option E: Invalid. Similar to Option C, it incorrectly attempts to concatenate a number directly with a numeric value without conversion. Additionally, the aliasing with quotes is incorrectly placed.
* Option F: Valid. This query simply adds two numeric columns (unit_price and surcharge), which is a valid and commonly used arithmetic operation in SQL.

NEW QUESTION # 189
Evaluate the following SQL statement:

Which statement is true regarding the outcome of the above query?

• A. It produces an error because positional notation cannot be used in the ORDER BYclause with SET operators.
• B. It produces an error because the ORDER BYclause should appear only at the end of a compound query- that is, with the last SELECTstatement.
• C. It executes successfully but ignores the ORDER BYclause because it is not located at the end of the compound statement.
• D. It executes successfully and displays rows in the descending order of PROMO_CATEGORY.

Answer: B

NEW QUESTION # 190
View the Exhibit and examine PRODUCTS and ORDER_ITEMS tables.

You executed the following query to display PRODUCT_NAME and the number of times the product has been ordered:
SELECT p.product_name, i.item_cnt
FROM (SELECT product_id, COUNT (*) item_cnt
FROM order_items
GROUP BY product_id) i RIGHT OUTER JOIN products p
ON i.product_id = p.product_id;
What would happen when the above statement is executed?

• A. The statement would not execute because inline views and outer joins cannot be used together.
• B. The statement would not execute because the GROUP BY clause cannot be used in the inline.
• C. The statement would not execute because the ITEM_CNT alias cannot be displayed in the outer query.
• D. The statement would execute successfully to produce the required output.

Answer: D

NEW QUESTION # 191
Examine these statements:
CREATE TABLE dept (
deptno NUMBER PRIMARY KEY,
diname VARCHAR2(10) ,
mgr NUMBER ,
CONSTRAINT dept_fkey FOREIGN KEY(mgr) REFERENCES emp (empno));
CREATE TABLE emp (
Empno NUMBER PRIMARY KEY,
Ename VARCHAR2 (10) ,
deptno NUMBER,
CONSTRAINT emp_fkey FOREIGN KEY (deptno) REFERENCES dept (deptno) DISABLE); ALTER TABLE emp MODIFY CONSTRAINT emp_fkey ENABLE; Which two are true?

• A. The CREATE TABLE EMP statement must precede the CREATE TABLE DEPT statement for all threestatements to execute successfully.
• B. The Deptno column in the emp table will be able to contain nulls values.
• C. The DEFT FKEY constraint definition must be removed from the CREATE TABLE DEF statement.and be added with an AITER TABLE statement once both tables are created, for the two CREATE TABLE statements to execute successfully in the order shown.
• D. The MGR column in the DEPT table will not be able to contain NULL values.
• E. Both foreign key constraint definitions must be removed from the CREATE TABLE statements, andbe added with ALTER TABLE statements once both tables are created, for the two CREATE TABLEstatements to execute successfully in the order shown.
• F. All three statements execute successfully in the order shown

Answer: B,C

NEW QUESTION # 192
View the Exhibits and examine the structure of the COSTS and PROMOTIONS tables.
You want to display PROD_IDS whose promotion cost is less than the highest cost PROD_ID in a promotion time interval.
Examine this SQL statements:

What will be the result?
Exhibit 1.

Exhibit 2.

• A. It executes successfully but does not give the required result
• B. It executes successfully and gives the required result
• C. It gives an error because the GROUP BY clause is not valid
• D. It gives an error because the ALL keyword is not valid

Answer: B

NEW QUESTION # 193
Examine the description of the PRODUCT_INFORMATIONtable:

Which query retrieves the number of products with a null list price?
SELECT COUNT (DISTINCT list_price) FROM product_information WHERE list_price

• A. NULL;
• B. SELECT COUNT(NVL(list_price, 0)) FROM product_information WHERE list_price IS
• C. IS NULL;
  SELECT COUNT (list_price) FROM product_information WHERE list_price IS NULL;
• D. SELECT COUNT (list_price) FROM product_information WHERE list_price = NULL;

Answer: A

Explanation:
Explanation/Reference: https://www.oracletutorial.com/oracle-aggregate-functions/oracle-avg/

NEW QUESTION # 194
Examine the structure of the SALES table. (Choose two.)

Examine this statement:
SQL > CREATE TABLE sales1 (prod_id, cust_id, quantity_sold, price)
AS
SELECT product_id, customer_id, quantity_sold, price
FROM sales
WHERE 1 = 2;
Which two statements are true about the SALES1 table?

• A. It will have NOT NULL constraints on the selected columns which had those constraints in the SALES table.
• B. It will not be created because of the invalid WHERE clause.
• C. It is created with no rows.
• D. It has PRIMARY KEY and UNIQUE constraints on the selected columns which had those constraints in the SALES table.
• E. It will not be created because the column-specified names in the SELECT and CREATE TABLE clauses do not match.

Answer: A,C

NEW QUESTION # 195
Examine the description of the sales table.
The sales table has 55,000 rows.
Examine this statements:
Which two statements are true?

• A. SALES1 created with no rows.
• B. SALES1 has PRIMARY KEY and UNIQUE constraints on any selected columns which had those constraints in the SALES table.
• C. SALES1 created with 55, 000 rows
• D. SALES1 has NOT NULL constraints on any I selected columns which had those constraints I in the SALES table.
• E. SALES1 created with 1 row.

Answer: C,D

NEW QUESTION # 196
Which two statements are true regarding the EXISTS operator used in the correlated subqueries? (Choose two.)

• A. The outer query stops evaluating the result set of the inner query when the first value is found.
• B. It is used to test whether the values retrieved by the outer query exist in the result set of the inner query.
• C. The outer query continues evaluating the result set of the inner query until all the values in the result set are processed.
• D. It is used to test whether the values retrieved by the inner query exist in the result of the outer query.

Answer: A,B

Explanation:
Explanation
References:
http://www.techonthenet.com/oracle/exists.php

NEW QUESTION # 197
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