1Z0-051 - Oracle Certification Prep

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ORACLE 1Z0-051 E XAM QUESTIONS

Oracle Database: SQL Fundamentals I

[ Total Questions: 10 ]

Topic break down



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Which three statements are true regarding sub queries? (Choose three.)

Topic 1, Volume A

Question No : 1 - (Topic 1)

. u t p e co umns or express ons can e compare etween t e ma n

query and sub query

B. Sub queries can contain GROUP BY and ORDER BY clauses

C. Only one column or expression can be compared between the main

query and subqeury

D. Main query and sub query can get data from different tables

E. Main query and sub query must get data from the same tables

F. Sub queries can contain ORDER BY but not the GROUP BY clause

Answer: A,B,Dhttps://www.pass4sures.com/1z0-051.html


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When does a transaction complete? (Choose all that apply.)


A . When a PL/SQL anonymous block is executed

B. When a DELETE statement is executed

C. When a data definition language statement is executed

D. When a TRUNCATE statement is executed after the pending transaction

E. When a ROLLBACK command is executed

Answer: C,D,E



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View the Exhibits and examine the structures of the CUSTOMERS, SALES, andCOUNTRIES tables. You need to generate a report that shows all country names,with corresponding customers (if any) and sales details (if any), for all customers.

Which FROM clause gives the required result?


A. FROM sales JOIN customers USING (cust_id) FULL OUTER JOIN countriesUSING (country_id);B. FROM sales JOIN customers USING (cust_id) RIGHT OUTER JOINcountries USING (country_id);C. FROM customers LEFT OUTER JOIN sales USING (cust_id) RIGHT OUTERJOIN countries USING (country_id);D. FROM customers LEFT OUTER JOIN sales USING (cust_id) LEFT OUTERJOIN countries USING (country_id);

Answer: C



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Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables:

Which DELETE statement is valid?

A. DELETE FROM employees

WHERE employee_id = (SELECT employee_id

FROM employees);

B. DELETE * FROM em lo ees


.

WHERE employee_id = (SELECT employee_id

FROM new_employees);

C. DELETE FROM employees

WHERE employee_id IN(SELECT employee_id

FROM new_employees

WHERE name = 'Carrey');D. DELETE * FROM employees

WHERE employee_id IN (SELECT employee_id

FROM new_employees

WHERE last_name = 'Carrey');

Answer: C



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In which four clauses can a sub query be used? (Choose four.)


A. in the INTO clause of an INSERT statement

B. in the FROM clause of a SELECT statement

C. in the GROUP BY clause of a SELECT statement

D. in the WHERE clause of a SELECT statement

E. in the SET clause of an UPDATE statementF. in the VALUES clause of an INSERT statement

Answer: A,B,D,E



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Examine the data in the CUST_NAME column of the CUSTOMERS table.

CUST_NAME

------------------------

Renske Ladwig

Jason Mallin

Samuel McCain

Allan MCEwen

Irene Mikkilineni

Julia Nayer

You need to display customers' second names where the second name starts with "Mc" or


"MC."

Which query gives the required output?

A. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)

FROM customers

WHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1))='Mc';

B. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)

FROM customers

WHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1)) LIKE 'Mc%';

C. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)

FROM customers

WHERE SUBSTR(cust_name, INSTR(cust_name,' ')+1) LIKE INITCAP('MC%');

D. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)

FROM customers

WHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1)) = INITCAP('MC%');

Answer: B https://www.pass4sures.com/1z0-051.html


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Which substitution variable would you use if you want to reuse the variable without

prompting the user each time?


A. &

B. ACCEPT

C. PROMPT

D. &&

Answer: B



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What are two reasons to create synonyms? (Choose two.)


. ou ave oo many a es.

B. Your tables names are too long.

C. Your tables have difficult names.

D. You want to work on your own tables.

E. You want to use another schema's tables.

F. You have too many columns in your tables.

Answer: B,C



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The STUDENT_GRADES table has these columns:

STUDENT_ID NUMBER(12)

SEMESTER_END DATE

GPA NUMBER(4,3)

Which statement finds the highest grade point average (GPA) per semester?


. _

B. SELECT (gpa) FROM student_grades GROUP BY semester_end WHERE gpa IS NOT

NULL;

C. SELECT MAX(gpa) FROM student_grades WHERE gpa IS NOT NULL GROUP BY

semester_end;

D. SELECT MAX(gpa) GROUP BY semester_end WHERE gpa IS NOT NULL FROM

student_grades;

E. SELECT MAX(gpa) FROM student_grades GROUP BY semester_end WHERE gpa IS

NOT NULL;

Answer: C



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