Latest [Dec 08, 2024] Oracle 1z1-071 Exam Practice Test To Gain Brilliante Result
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Oracle 1z0-071 certification exam is suitable for individuals who want to pursue a career in database administration, database development, or data analysis. 1z1-071 exam is an essential requirement for professionals who work with Oracle databases, including developers, database administrators, system analysts, and technical consultants. By passing the Oracle 1z0-071 certification exam, candidates demonstrate their proficiency in SQL programming and their ability to work with Oracle databases, which can boost their career prospects and earning potential.
NEW QUESTION # 25
Which three statements are true regarding single row subqueries?
- A. They can be used in the clause.
- B. They must be placed on the left side of the comparison operator or condition.
- C. They can be used in the HAVING clause.
- D. They must return a row to prevent errors in the SQL statement.
- E. A SQL statement may have multiple single row subquery blocks.
- F. They must be placed on the right side of the comparison operator or condition.
Answer: A,C,E
NEW QUESTION # 26
Examine the data in the NEW_EMPLOYEES table:
Examine the data in the EMPLOYEES table:
You want to:
1. Update existing employee details in the EMPLOYEES table with data from the NEW EMPLOYEES table.
2. Add new employee detail from the NEW_ EMPLOYEES able to the EMPLOYEES table.
Which statement will do this:
- A. MERGE INTO employees e
USING new employees ne
ON (e.employee_id = ne.employee_id)
WHEN FOUND THEN
UPDATE SET e.name =ne.name, e.job_id=ne.job_id, e.salary =ne.salary
WHEN NOT FOUND THEN
INSERT VALUES (ne.employee_id,ne.name,ne.job_id,ne.salary) ; - B. MERGE INTO employees e
USING new employees ne
WHERE e.employee_id = ne.employee_ id
WHEN MATCHED THEN
UPDATE SET e.name = ne.name, e.job_id = ne.job_id,e.salary =ne. salary
WHEN NOT MATCHED THEN
INSERT VALUES (ne. employee_id,ne.name, ne.job_id,ne.salary) ; - C. MERGE INTO employees e
USING new_employees n
ON (e.employee_id = ne.employee_id)
WHEN MATCHED THEN
UPDATE SET e.name = ne.name, e.job id = ne.job_id,e.salary =ne. salary
WHEN NOT MATCHED THEN
INSERT VALUES (ne. employee_id,ne.name,ne.job_id,ne.salary); - D. MERGE INTO employees e
USING new_employees n
WHERE e.employee_id = ne.employee_id
WHEN FOUND THEN
UPDATE SET e.name=ne.name,e.job_id =ne.job_id, e.salary=ne.salary
WHEN NOT FOUND THEN
INSERT VALUES (ne.employee_ id,ne.name,ne.job id,ne.salary) ;
Answer: C
NEW QUESTION # 27
View the Exhibits and examine PRODUCTS and SALES tables.
Exhibit 1
Exhibit 2
You issue the following query to display product name the number of times the product has been sold:
What happens when the above statement is executed?
- A. The statement executes successfully and produces the required output.
- B. The statement produces an error because a subquery in the FROM clause and outer- joins cannot be used together.
- C. The statement produces an error because ITEM_CNT cannot be displayed in the outer query.
- D. The statement produces an error because the GROUP BY clause cannot be used in a subquery in the FROM clause.
Answer: A
NEW QUESTION # 28
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 ALL
- C. MINUS
- D. UNION
Answer: C
NEW QUESTION # 29
Examine this description of the PRODUCTS table:
Rows exist in this table with data in all the columns. You put the PRODUCTS table in read-only mode.
Which three commands execute successfully on PRODUCTS?
- A. DROP TABLE products;
- B. ALTER TABLE products DROP UNUSED COLUMNS;
- C. CREATE INDEX price_idx ON products (price);
- D. TRUNCATE TABLE products;
- E. ALTER TABLE products DROP COLUMN expiry_date;
- F. ALTER TABLE products SET UNUSED (expiry_date);
Answer: A,B,C
NEW QUESTION # 30
The CUSTOMERStable has a CUST_CREDIT_LIMITcolumn of data type NUMBER.
Which two queries execute successfully?
- A. SELECT TO_CHAR(NVL(cust_credit_limit * .15, 'Not Available')) FROM customers;
- B. SELECT NVL2(cust_credit_limit, TO_CHAR(cust_credit_limit * .15), 'Not
Available') FROM customers; - C. SELECT NVL2 (cust_credit_limit * .15, 'Not Available') FROM customers;
- D. SELECT NVL (cust_credit_limit * .15, 'Not Available') FROM customers;
- E. SELECT NVL(TO_CHAR(cust_credit_limit * .15), 'Not Available') FROM customers;
Answer: C,E
NEW QUESTION # 31
You execute this command:
TRUNCATE TABLE dept;
Which two are true?
- A. A ROLLBACK statement can be used to retrieve the deleted data.
- B. It drops any triggers defined on the table.
- C. A FLASHBACK TABLE statement can be used to retrieve the deleted data.
- D. It retains the indexes defined on the table.
- E. It retains the integrity constraints defined on the table.
- F. It always retains the space used by the removed rows.
Answer: D,E
Explanation:
When using the TRUNCATE TABLE command in Oracle, several aspects of the table's structure and associated database objects are impacted. Here's an explanation of each option:
* A: Incorrect. TRUNCATE TABLE does not drop triggers associated with the table; they remain defined.
* B: Correct. Indexes on the table are retained and not dropped when you truncate a table. However, if the index is a domain index, it may be dropped depending on its type.
* C: Correct. Integrity constraints such as primary keys, foreign keys, etc., are retained unless they are on a disabled state where truncation can lead to constraint being dropped.
* D: Incorrect. A TRUNCATE TABLE operation cannot be rolled back. It is a DDL (Data Definition Language) operation and commits automatically.
* E: Incorrect. The TRUNCATE TABLE operation deallocates the space used by the data unless the REUSE STORAGE clause is specified.
* F: Incorrect. TRUNCATE TABLE operation removes all the rows in a table and does not log individual row deletions, thus FLASHBACK TABLE cannot be used to retrieve the data.
NEW QUESTION # 32
On your Oracle 12c database, you invoked SQL *Loader to load data into the EMPLOYEEStable in the HR schema by issuing the following command:
$> sqlldr hr/hr@pdb table=employees
Which two statements are true regarding the command? (Choose two.)
- A. It fails because no SQL *Loader control file location is specified.
- B. It fails if the HR user does not have the CREATE ANY DIRECTORYprivilege.
- C. It succeeds with default settings if the EMPLOYEEStable belonging to HR is already defined in the database.
- D. It fails because no SQL *Loader data file location is specified.
Answer: B,C
Explanation:
Explanation/Reference:
NEW QUESTION # 33
Examine these statements:
Which two are true?
- A. Both foreign key constraint definition must be removed from the CREATE statements, and be added with ALTER TABLE statements once both tables are created, for the two CREATE TABLE statements to execute successfully in the order shown.
- B. The DEPT_FKEY constraint definition must be removed from the CREATE TABLE DEPT statement. and the added with an D. ALTER statement once both tables are created, for the two CREATE TABLE statements to execute successfully in the order shown.
- C. All three statements execute successfully in the order shown.
- D. The MGR column In the DEPT table will not be able to contain null values.
- E. The create TABLE EMP statement must precede the create table DEPT statement for all three statements to execute successfully.
- F. The DEPTNO column in the EMP table will be able to contain null values.
Answer: B,F
NEW QUESTION # 34
Which three are true about subqueries?
- A. A subquery cannot be used in the select list.
- B. A subquery can be used in a HAVING clause.
- C. < any returns true if the argument is less than the lowest value returned by the subquery.
- D. <ANY returns true if the argument is less than the highest value returned by the subquery.
- E. A subquery can be used in a WHERE clause.
- F. A subquery cannot be used in a FROM clause.
- G. =ANY can only evaluate the argument against a subcjuery if it returns two or more values.
Answer: B,D,E
NEW QUESTION # 35
View the Exhibit and examine the structure of the ORDERS table. The ORDER_ID column
is the
PRIMARY KEY in the ORDERS table.
Evaluate the following CREATE TABLE command:
CREATE TABLE new_orders(ord_id, ord_date DEFAULT SYSDATE, cus_id)
AS
SELECT order_id.order_date,customer_id
FROM orders;
Which statement is true regarding the above command?
- A. The NEW_IDRDERS table would get created and only the NOT NULL constraint defined on the specified columns would be passed to the new table.
- B. The NEW_IDRDERS table would get created and all the constraints defined on the specified columns in the ORDERS table would be passed to the new table.
- C. The NEW_IDRDERS table would not get created because the DEFAULT value cannot be specified in the column definition.
- D. The NEW_IDRDERS table would not get created because the column names in the CREATE TABLE command and the SELECT clause do not match.
Answer: A
NEW QUESTION # 36
View the Exhibit and examine the description of the ORDERS table. (Choose two.)
Which two WHERE clause conditions demonstrate the correct usage of conversion functions?
- A. WHERE Order_date_IN ( TO_DATE('OCT 21 2003', 'MON DD YYYY'), TO_CHAR('NOV
21 2003', 'MON DD YYYY') ) - B. WHERE Order_date > ( TO_DATE('JUL 10 2006', 'MON DD YYYY')
- C. WHERE Order_date > TO_CHAR(ADD_MONTHS(SYSDATE, 6), 'MON DD YYYY')
- D. WHERE TO_CHAR(Order_date, 'MON DD YYYY') = 'JAN 20 2003'
Answer: B,D
NEW QUESTION # 37
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 promo with the lowest cost.
- B. It displays prod IDs in the promos with the lowest cost in the same time interval.
- C. It displays prod IDs in the promos with the highest 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 # 38
View the exhibit and examine the data in the PROJ_TASK_DETAILS table. (Choose the best answer.)
The PROJ_TASK_DETAILS table stores information about project tasks and the relation between them.
The BASED_ON column indicates dependencies between tasks.
Some tasks do not depend on the completion of other tasks.
You must generate a report listing all task IDs, the task ID of any task upon which it depends and the name of the employee in charge of the task upon which it depends.
Which query would give the required result?
- A. SELECT p.task_id, p.based_on, d.task_in_charge
FROM proj_task_details p JOIN proj_task_details d
ON (p.based_on = d.task_id); - B. SELECT p.task_id, p.based_on, d.task_in_charge
FROM proj_task_details p LEFT OUTER JOIN proj_task_details d
ON (p.based_on = d.task_id); - C. SELECT p.task_id, p.based_on, d.task_in_charge
FROM proj_task_details p JOIN proj_task_details d
ON (p.task_id = d.task_id); - D. SELECT p.task_id, p.based_on, d.task_in_charge
FROM proj_task_details p FULL OUTER JOIN proj_task_details d
ON (p.based_on = d.task_id);
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION # 39
View the Exhibit and examine the structure of the PRODUCT_INFORMATION table.
PRODUCT_ID column is the primary key.
You create an index using this command:
SQL > CREATE INDEX upper_name_idx
ON product_information(UPPER(product_name));
No other indexes exist on the PRODUCT_INFORMATION table.
Which query would use the UPPER_NAME_IDX index? (Choose the best answer.)
- A. SELECT UPPER(product_name)FROM product_informationWHERE product_id = 2254;
- B. SELECT UPPER(product_name)FROM product_information;
- C. SELECT product_idFROM product_informationWHERE UPPER(product_name) IN ('LASERPRO', 'CABLE');
- D. SELECT product_id, UPPER(product_name)FROM product_informationWHERE UPPER(product_name)='LASERPRO' OR list_price > 1000;
Answer: C
NEW QUESTION # 40
Examine the structure of the PROMOTIONS table: (Choose the best answer.) 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 promo_category, DISTINCT promo_cost FROM promotions
- D. SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1
Answer: D
NEW QUESTION # 41
Examine the description of the CUSTOMERS table:
CUSTNO is the PRIMARY KEY.
You must determine if any customers' details have been entered more than once using a different CUSTNO, by listing all duplicate names.
Which two methods can you use to get the required result?
- A. subquery
- B. FULL OUTER JOIN with self join
- C. self join
- D. RIGHT OUTER JOIN with self join
- E. LEFT OUTER JOIN with self join
Answer: A,C
NEW QUESTION # 42
Which statement is true about SQL query processing in an Oracle database instance? (Choose the best answer.)
- A. During executing, the oracle server may read data from storage if the required data is not already in memory.
- B. During parsing, a SQL statement containing literals in the WHERE clause that has been executed by any session and which is cached in memory, is always reused for the current execution.
- C. During row source generation, rows that satisfy the query are retrieved from the database and stored in memory.
- D. During optimization, execution plans are formulated based on the statistics gathered by the database instance, and the lowest cost plan is selected for execution.
Answer: A
NEW QUESTION # 43
Which two statements are true about substitution variables?
- A. A substitution variable used to prompt for a column name must be endorsed in single quotation marks.
- B. A substitution variable can be used only in a SELECT statement.
- C. A substitution variable used to prompt for a column name must be endorsed in double quotation marks.
- D. A substitution variable can be used with any clause in a SELECT statement.
- E. A substitution variable prefixed with & always prompts only once for a value in a session.
- F. A substitution variable prefixed with 6 prompts only once for a value in a session unless is set to undefined in the session.
Answer: D,F
NEW QUESTION # 44
Examine the commands used to create DEPARTMENT_DETAILS and
COURSE_DETAILS:
You want to generate a report that shows all course IDs irrespective of whether they have corresponding department IDs or not but no department IDs if they do not have any courses.
Which SQL statement must you use?
- A. SELECT c.course_id, d.department_id FROM course_details c FULL OUTER JOIN department_details d ON (c.department_id<>d. department_id)
- B. SELECT course_id, department_id, FROM department_details d RIGHT OUTER JOIN course_details c USING (department_id)
- C. SELECT c.course_id, d.department_id FROM course_details c RIGHT OUTER JOIN
.department_details d ON (c.depatrment_id=d.department_id) - D. SELECT c.course_id, d.department_id FROM course_details c FULL OUTER JOIN department_details d ON (c.department_id=d. department_id)
Answer: D
NEW QUESTION # 45
Which statement is true about TRUNCATE and DELETE?
- A. You can never TRUNCATE a table if foreign key constraints will be violated.
- B. For large tables TRUNCATE is faster than DELETE.
- C. You can never tows from a table if foreign key constraints will be violated.
- D. For tables with multiple indexes and triggers is faster than TRUNCATE.
Answer: B
Explanation:
A: True. TRUNCATE is generally faster than DELETE for removing all rows from a table because TRUNCATE is a DDL (Data Definition Language) operation that minimally logs the action and does not generate rollback information. TRUNCATE drops and re-creates the table, which is much quicker than deleting rows one by one as DELETE does, especially for large tables. Also, TRUNCATE does not fire triggers.
References:
* Oracle documentation specifies that TRUNCATE is faster because it doesn't generate redo logs for each row as DELETE would.
* TRUNCATE cannot be rolled back once executed, since it is a DDL command and does not generate rollback information as DML commands do.
NEW QUESTION # 46
Which three statements are true regarding indexes? (Choose three.)
- A. A table belonging to one user can have an index that belongs to a different user
- B. When a table is dropped and is moved to the RECYCLE BIN, all indexes built on that table are permanently dropped
- C. A SELECT statement can access one or more indices without accessing any tables
- D. A UNIQUE index can be altered to be non-unique
- E. An update to a table can result in updates to any or all of the table's indexes
- F. An update to a table can result in no updates to any of the table's indexes
Answer: B,C,F
NEW QUESTION # 47
Which three statements are true about Structured Query Language (SQL)?
- A. It guarantees atomicity, consistency, isolation, and durability (ACID) features
- B. It best supports relational databases
- C. It is used to define encapsulation and polymorphism for a relational table
- D. It is the only language that can be used for both relational and object-oriented databases
- E. It provides independence for logical data structures being manipulated from the underlying physical data storage
- F. It requires that data be contained in hierarchical data storage
Answer: B,E
Explanation:
For question 134, the correct options are B and F based on the capabilities and design of SQL:
* B. It best supports relational databases: SQL is fundamentally designed to manage and query data in relational databases. It is the standard language used for managing relational database management systems (RDBMS) and for performing all types of data operations within them.
* F. It provides independence for logical data structures being manipulated from the underlying
* physical data storage: SQL allows users to interact with the data at a logical level without needing to know how the data is physically stored. This is known as logical data independence, which is a key feature of SQL in managing databases.
Other options are incorrect because:
* A: SQL itself doesn't guarantee ACID properties; these are provided by the database management system's transaction control mechanisms.
* C, D, E: These statements are incorrect as SQL does not inherently support object-oriented concepts like encapsulation and polymorphism, is not limited to hierarchical data storage, and is not the only language used for both relational and object-oriented databases.
NEW QUESTION # 48
View the exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTS and TIMES tables.
The PROD_ID column is the foreign key in the SALES table, which references the PRODUCTS table.
Similarly, the CUST_ID and TIME_ID columns are also foreign keys in the SALES table referencing the CUSTOMERS and TIMES tables, respectively.
Evaluate the following CREATE TABLE command:
CREATE TABLE new_sales (prod_id, cust_id, order_date DEFAULT SYSDATE)
AS
SELECT prod_id, cust_id, time_id
FROM sales;
Which statement is true regarding the above command?
- A. The NEW_SALES table would not get created because the column names in the CREATE TABLE command and the SELECT clause do not match.
- B. The NEW_SALES table would get created and all the FOREIGN KEY constraints defined on the specified columns would be passed to the new table.
- C. The NEW_SALES table would not get created because the DEFAULT value cannot be specified in the column definition.
- D. The NEW_SALES table would get created and all the NOT NULL constraints defined on the specified columns would be passed to the new table.
Answer: D
NEW QUESTION # 49
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The 1z1-071 exam covers various topics such as SQL basics, data manipulation, data retrieval, table creation, and more. 1z1-071 exam is challenging and requires a deep understanding of the SQL language. Passing this certification exam demonstrates that you have the skills and knowledge needed to work with Oracle Database SQL effectively.
Oracle 1z0-071 certification exam is intended for individuals who want to demonstrate their expertise in SQL programming for Oracle databases. 1z1-071 exam is ideal for database administrators, developers, and programmers who work with Oracle databases on a regular basis. It is also suitable for individuals who are looking to advance their careers in the field of database management.
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