31 May, 2023

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Total 187 questions Full Exam Access

Question 1

You must display details of all users whose username contains the string 'ch_'. (Choose the best answer.) Which query generates the required output?

SELECT * FROM users Where user_name LIKE '%ch_';

SELECT * FROM usersWhere user_name LIKE '%ch_%'ESCAPE'%';

SELECT * FROM users Where user_name LIKE 'ch\_%' ESCAPE '_';

SELECT * FROM users Where user_name LIKE '%ch\_%' ESCAPE '\';

Question 2

You must create a table EMPLOYEES in which the values in the columns EMPLOYEES_ID and LOGIN_ID must be unique and not null. (Choose two.)
Which two SQL statements would create the required table?

CREATE TABLE employees(employee_id NUMBER,Login_id NUMBER,Employee_name VARCHAR2(100),Hire_date DATE,CONSTRAINT emp_id_ukUNIQUE (employee_id, login_id));

CREATE TABLE employees(employee_id NUMBER,login_id NUMBER,employee_name VARCHAR2(25),hire_date DATE,CONSTRAINT emp_id_pk PRIMARY KEY (employee_id, login_id));

CREATE TABLE employees(employee_id NUMBER CONSTRAINT emp_id_pk PRIMARY KEY, Login_id NUMBER UNIQUE, Employee_name VARCHAR2(25),Hire_date DATE);

CREATE TABLE employees(employee_id NUMBER,Login_id NUMBER,Employee_name VARCHAR2(100),Hire_date DATE,CONSTRAINT emp_id_uk UNIQUE (employee_id, login_id);CONSTRAINT emp_id_nn NOT NULL (employee_id, login_id));

CREATE TABLE employees(employee_id NUMBER CONSTRAINT emp_id_nn NOT NULL, Login_id NUMBER CONSTRAINT login_id_nn NOT NULL,Employee_name VARCHAR2(100),Hire_date DATE,CONSTRAINT emp_id_ukUNIQUE (employee_id, login_id));

Question 3

Which two statements are true regarding savepoints? (Choose two.)

Savepoints may be used to ROLLBACK.

Savepoints can be used for only DML statements.

Savepoints are effective only for COMMIT.

Savepoints are effective for both COMMIT and ROLLBACK.

Savepoints can be used for both DML and DDL statements.

Question 4

View the exhibits and examine the structures of the COSTS and PROMOTIONS tables.
1Z0-071 dumps exhibit

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?

It displays prod IDs in the promo with the lowest cost.

It displays prod IDs in the promos with the lowest cost in the same time interval.

It displays prod IDs in the promos with the highest cost in the same time interval.

It displays prod IDs in the promos which cost less than the highest cost in the same time interval.

Question 5

You issued the following command: SQL> DROP TABLE employees; Which three statements are true?

All uncommitted transactions are committed.

All indexes and constraints defined on the table being dropped are also dropped.

Sequences used in the employees table become invalid.

The space used by the employees table is reclaimed immediately.

The employees table can be recovered using the rollback command.

The employees table is moved to the recycle bin

Question 6

View the exhibit and examine the descriptions of the DEPT and LOCATIONS tables.
1Z0-071 dumps exhibit

You want to update the CITY column of the DEPT table for all the rows with the corresponding value in the CITY column of the LOCATIONS table for each department.
Which SQL statement would you execute to accomplish the task?

UPDATE dept dSET city = ALL (SELECT cityFROM locations lWHERE d.location_id = l.location_id);

UPDATE dept dSET city = (SELECT cityFROM locations l)WHERE d.location_id = l.location_id;

UPDATE dept dSET city = ANY (SELECT cityFROM locations l)

UPDATE dept dSET city = (SELECT cityFROM locations lWHERE d.location_id = l.location_id);

Question 7

Examine the structure of the SALES table. (Choose two.)
1Z0-071 dumps exhibit

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?

It will not be created because the column-specified names in the SELECT and CREATE TABLE clauses do not match.

It will have NOT NULL constraints on the selected columns which had those constraints in the SALES table.

It will not be created because of the invalid WHERE clause.

It is created with no rows.

It has PRIMARY KEY and UNIQUE constraints on the selected columns which had those constraints in the SALES table.

Question 8

Which two statements are true regarding single row functions? (Choose two.)

MOD : returns the quotient of a division.

TRUNC : can be used with NUMBER and DATE values.

CONCAT : can be used to combine any number of values.

SYSDATE : returns the database server current date and time.

INSTR : can be used to find only the first occurrence of a character in a string.

TRIM : can be used to remove all the occurrences of a character from a string.

Question 9

Which two partitioned table maintenance operations support asynchronous Global Index Maintenance in Oracle database 12c?

ALTER TABLE SPLIT PARTITION

ALTER TABLE MERGE PARTITION

ALTER TABLE TRUNCATE PARTITION

ALTER TABLE ADD PARTITION

ALTER TABLE DROP PARTITION

ALTER TABLE MOVE PARTITION

Question 10

View the Exhibit and examine the structure of the CUSTOMERS table.
1Z0-071 dumps exhibit

Using the CUSTOMERS table, you must generate a report that displays a credit limit increase of 15% for all customers.
Customers with no credit limit should have “Not Available” displayed. Which SQL statement would produce the required result?

SELECT NVL (TO_CHAR(cust_credit_limit*.15), ‘Not Available’) “NEW CREDIT” FROM customers

SELECT TO_CHAR(NVL(cust_credit_limit*.15), ‘Not Available’)) “NEW CREDIT” FROMcustomers

SELECT NVL (cust_credit_limit*.15, ‘Not Available’) “NEW CREDIT” FROM customers

SELECT NVL (cust_credit_limit, ‘Not Available’)*.15 “NEW CREDIT” FROM customers

Question 11

Examine the structure of the INVOICE table. NameNull?Type
-------------------------------------------------- INV_NONOT NULLNUMBER(3) INV_DATEDATE INV_AMTNUMBER(10,2)
Which two SQL statements would execute successfully?

SELECT inv_no, NVL2(inv_date, 'Pending', 'Incomplete')FROM invoice;

SELECT inv_no, NVL2(inv_amt, inv_date, 'Not Available')FROM invoice;

SELECT inv_no, NVL2(inv_date, sysdate-inv_date, sysdate)FROM invoice;

SELECT inv_no, NVL2(inv_amt, inv_amt*.25, 'Not Available')FROM invoice;

Question 12

View the Exhibit and examine PRODUCTS and ORDER_ITEMS tables.
1Z0-071 dumps exhibit

You executed the following query to display PRODUCT_NAME and the number of times the product has been ordered:
SQL>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?

The statement would execute successfully to produce the required output.

The statement would not execute because inline views and outer joins cannot be used together.

The statement would not execute because the ITEM_CNT alias cannot be displayed in the outer query.

The statement would not execute because the GROUP BY clause cannot be used in the inline.

Question 13

You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference.
Which method or feature should you use?

Compare Period ADDM report.

AWR Compare Period report.

Active Session History (ASH) report.

Taking a new snapshot and comparing it with a preserved snapshot.

Question 14

Evaluate the following SQL statement:
SELECT product_name || 'it's not available for order' FROM product_information
WHERE product_status = 'obsolete';
You received the following error while executing the above query: ERROR
ORA-01756: quoted string not properly terminated What would you do to execute the query successfully?

Use Quote (q) operator and delimiter to allow the use of single quotation mark in the literal character string.

Enclose the literal character string in the SELECT clause within the double quotation marks.

Do not enclose the character literal string in the SELECT clause within the single quotation marks.

Use escape character to negate the single quotation mark inside the literal character string in the SELECT clause.

Question 15

Which two statements are true regarding the WHERE and HAVING clauses in a SELECT statement? (Choose two.)

The WHERE and HAVING clauses can be used in the same statement only if they are applied to different columns in the table.

The aggregate functions and columns used in the HAVING clause must be specified in the SELECT list of the query.

The WHERE clause can be used to exclude rows after dividing them into groups.

The HAVING clause can be used with aggregate functions in subqueries.

The WHERE clause can be used to exclude rows before dividing them into groups.

Question 16

Which two statements best describe the benefits of using the WITH clause? (Choose two.)

It can improve the performance of a large query by storing the result of a query block having the WITH clause in the session's temporary tablespace.

It enables sessions to reuse the same query block in a SELECT statement, if it occurs more than once in a complex query.

It enables sessions to store a query block permanently in memory and use it to create complex queries.

It enables sessions to store the results of a query permanently.

Question 17

Examine the business rule:
Each student can work on multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true in this scenario?

The ERD must have a 1:M relationship between the STUDENTS and PROJECTS entities.

The ERD must have a M:M relationship between the STUDENTS and PROJECTS entities that must be resolved into 1:M relationships.

STUDENT_ID must be the primary key in the STUDENTS entity and foreign key in the PROJECTS entity.

PROJECT_ID must be the primary key in the PROJECTS entity and foreign key in the STUDENTS entity.

An associative table must be created with a composite key of STUDENT_ID and PROJECT_ID, which is the foreign key linked to the STUDENTS and PROJECTS entities.

Question 18

View the Exhibit and examine the structure of the PROMOTION table.
1Z0-071 dumps exhibit

You have to generate a report that displays the promo named start data for all promos that started after that last promo in the ‘INTTERNET’ category.

Select promo_name, promo_being_date FROM promoptions WHERE promo_being_data > ANY (SELCT promo_being-date FROM promotionsWHERE promo_category = ‘INTERNET’

SELECT promo_neme, promo_being_date FROM promotions WHERE promo_being_date > All (SELECT promo_beinjg-date FROM promotionsWHERE promo_category =’INTERNET’ );

SELECT promo-name, promo-being _date FROM promotionsWhere promo_being_data >ALL (SELECT MAX (promo_being-date) FROM promotions ) ANDPromo-category =’INTERNET’;

SELECT promo-name, promo-being_date FROM promotion WHERE promo-being-date IN (SELECT promo_biing_date FROM promotionsWHERE promo_category=’INTYERNET’);

Question 19

Which statement is true regarding the USING clause in table joins? (Choose two.)

It can be used to join a maximum of three tables.

It can be used to access data from tables through equijoins as well as nonequijoins.

It can be used to join tables that have columns with the same name and compatible data types.

It can be used to restrict the number of columns used in a NATURAL join.

Question 20

You must create a table for a banking application. (Choose the best answer.) One of the columns in the table has these requirements:
1: A column to store the duration of a short team loan
2: The data should be stored in a format supporting DATE arithmetic with DATE datatypes without using conversion functions.
3: The maximum loan period is 30 days.
4: Interest must be calculated based on the number of days for which the loan remains unpaid. Which data type would you use?

Date

Number

Timestamp

Interval day to second

Interval year to month

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Total 187 questions Full Exam Access