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Question 1:
Which two statements execute successfully?
A. SELECT TO_ DATE(\’2019-DEC-25 15:30\’ \’YYYY-MON-DD HH24:MI\’, \’NLS_ DATE_ LANGUAGE =AMERICAN\’ ) FROM DUAL;
B. SELECT TO_CHAR(\’2019-DEC-25 15:30″ YY-MON-D HH24:M2\’, \’NLS_DATE LANGUAGE = AMERICAN\’) FROM DUAL;
C. SELECT TO _DATE (TO_ CHAR (`2019-DEC-25 03:30\’, `YYYY-MON-DD HH12:MI\’)) FROM DUAL;
D. SELECT TO _ CHAR (TO_ DATE (`2019-DEC-25 03:30\’,\’YYYY-MON-DD HH12:MI\’)) FROM DUAL
E. SELECT TO _ CHAR (`2019-DEC-25 15:30\’.\’YYYY-MON-DD HH24:MI\’) FROM DUAL
Correct Answer: AD
Question 2:
Examine the structure of the MEMBERS table.
Which query can be used to display the last names and city names only for members from the states MO and MI?
A. SELECT last_name, city FROM members WHERE state =\’MO\’ AND state =\’MI\’;
B. SELECT last_name, city FROM members WHERE state LIKE \’M%\’;
C. SELECT last_name, city FROM members WHERE state IN (\’MO\’, \’MI\’);
D. SELECT DISTINCT last_name, city FROM members WHERE state =\’MO\’ OR state =\’MI\’;
Correct Answer: C
Question 3:
Examine the structure of the PROGRAMS table: Which two SQL statements would execute successfully?
A. SELECT NVL (ADD_MONTHS (END_DATE,1) SYSDATE) FROM programs;
B. SELECT TO_DATE (NVL (SYSDATE-END_DATE, SYSDATE)) FROM programs;
C. SELECT NVL (MONTHS_BETWEEN (start_date, end_date), `Ongoing\’) FROM programs;
D. SELECT NVL (TO_CHAR (MONTHS_BETWEEN (start-date, end_date)), `Ongoing\’) FROM programs
Correct Answer: BD
Question 4:
Which two statements are true about * _TABLES views?
A. You must have ANY TABLE system privileges, or be granted object privileges on the table, to view tabl e in DBA TABLES.
B. USER TABLES displays all tables owned by the current user.
C. You must have ANY TABLE system privileges, or be granted object privileges on the table, to view a table in USER_TABLES.
D. ALL TABLES display all tables owned by the current user.
E. You must have ANY TABLE system privileges, or be granted object privileges on the table, to view a table in ALL_TABLES.
F. All users can query DBA_TABLES successfully.
Correct Answer: AB
Question 5:
Examine the data in the PRODUCTS table:
Examine these queries:
1.
SELECT prod name, prod list FROM products WHERE prod 1ist NOT IN(1020) AND category _id=1;
2.
SELECT prod name, | prod _ list FROM products WHERE prod list < > ANY (1020) AND category _id= 1; SELECT prod name, prod _ list FROM products WHERE prod_ list <> ALL (10 20) AND category _ id= 1; Which queries generate the same output?
A. 1 and 3
B. 1, 2 and 3
C. 2 and 3
D. 1 and 2
Correct Answer: A
Question 6:
Examine the structure of the INVOICE table.
Which two SQL statements would execute successfully?
A. SELECT inv_no, NVL2(inv_date, \’Pending\’, \’Incomplete\’) FROM invoice;
B. SELECT inv_no, NVL2(inv_amt, inv_date, \’Not Available\’) FROM invoice;
C. SELECT inv_no, NVL2(inv_date, sysdate-inv_date, sysdate) FROM invoice;
D. SELECT inv_no, NVL2(inv_amt, inv_amt*.25, \’Not Available\’) FROM invoice;
Correct Answer: AC
Question 7:
Which three statements are true about the DESCRIBE command?
A. It can be used by SQL developers.
B. It can be used to display the structure of an existing view.
C. It can be used only from SQL*Plus.
D. It displays the NOT NULL constraint for any columns that have that constraint.
E. It displays all constraints that are defined for each column.
F. It displays the PRIMARY KEY constraint for any column or columns that have that constraint.
Correct Answer: ABD
Question 8:
Which three statements are true regarding indexes?
A. A SELECT statement can access one or more indices without accessing any tables.
B. A table belonging to one user can have an index that belongs to a different user,
C. When a table is dropped and is moved to the RECYCLE BIN, all Indexes built on that table are permanently dropped.
D. A UNIQUE index can be altered to be non-unique.
E. An update to a table can result in no updates to any of the table\’s indexes.
F. An update to a table can result in updates to any or all of the table\’s indexes.
Correct Answer: BCE
Question 9:
Which two statements are true?
A. AIl conditions evaluated using DECODE can also be evaluated using CASE.
B. All conditions evaluated using CASE can also be evaluated using DECODE.
C. CASE is a function and DECODE is not.
D. DECODE is a function and CASE is not.
E. Neither CASE nor DECODE is a function.
F. Both CASE and DECODE are functions.
Correct Answer: AD
Question 10:
Which three statements are true regarding the SQL WHERE and HAVING clauses?
A. The HAVING clause conditions can have aggregating functions.
B. The HAVING clause conditions can use aliases for the columns.
C. The WHERE and HAVING clauses cannot be used together in a SQL statement.
D. The WHERE clause is used to exclude rows before grouping data.
E. The HAVING clause is used to exclude one or more aggregated results after grouping data.
Correct Answer: ADE
Question 11:
Which three are true?
A. LAST_DAY returns the date of the last day of the current, month only.
B. CEIL requires an argument Which is a numeric data type.
C. ADD_MONTHS adds a number of calendar months to a date.
D. ADD_MONTHS works with a character string that can be implicitly converted to a DATE data type.
E. LAST_DAY returns the date of the last day of the previous month only.
F. CEIL returns the largest integer less than or equal to a specified number.
G. LAST_DAY returns the date of the last day of the month for the date argument passed to the function.
Correct Answer: CF
https://docs.oracle.com/database/121/SQLRF/functions025.htm https://docs.oracle.com/cd/B2835901/server111/b28286/functionsQ04.htm
Question 12:
Examine the description or the CUSTOMERS table:
For Customers whose income level has a value, you want to display the first name and due amount as 5% of their credit limit. Customers whose due amount is null should not be displayed.
Which query should be used?
A. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNT FROM customers WHERE cust_income_level != NULL AND cust_credit_level != NULL;
B. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMONT FROM customers WHERE cust_income_level <> NULL AND due_amount <> NULL;
C. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMONT FROM customers WHERE cust_income_level IS NOT NULL AND cust_credit_limit IS NOT NULL;
D. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMONT FROM customers WHERE cust_income_level IS NOT NULL AND due_amount IS NOT NULL;
E. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMONT FROM customers WHERE cust_income_level != NULL AND due_amount != NULL;
Correct Answer: C
Question 13:
Examine the description of the EMPLOYEES table:
Which statement will fail?
A. SELECT department_id, COUNT (*) FROM employees HAVING department_ id <> 90 AND COUNT(*) >= 3 GROUP BY department_id;
B. SELECT department_id, COUNT (*) FROM employees WHERE department_ id <> 90 AND COUNT(*) >= 3 GROUP BY department_id;
C. SELECT department_id, COUNT(*) FROM employees WHERE department_id <> 90 HAVING COUNT(*) >= 3 GROUP BY department_id;
D. SELECT department_id, COUNT(*) FROM employees WHERE department_id <> 90 GROUP BY department_id HAVING COUNT(*) >= 3;
Correct Answer: B
Question 14:
Which three statements are true regarding subqueries? (Choose three.)
A. Multiple columns or expressions can be compared between the main query and subquery.
B. Subqueries can contain ORDER BY but not the GROUP BY clause.
C. Main query and subquery can get data from different tables.
D. Subqueries can contain GROUP BY and ORDER BY clauses.
E. Main query and subquery must get data from the same tables.
F. Only one column or expression can be compared between the main query and subquery.
Correct Answer: ACD
References: http://docs.oracle.com/javadb/10.6.2.1/ref/rrefsqlj13658.html
Question 15:
The SYSDATE function displays the current Oracle Server date as:
21 -MAY-19
You wish to display the date as:
MONDAY, 21 MAY, 201 9
Which statement will do this?
A. SELECT TO _ CHAR (SYSDATE, \’ FMDAY, DD MONTH, YYYY\’) FROM DUAL;
B. SELECT TO _ DATE (SYSDATE, \’ FMDAY, DD MONTH, YYYY\’) FROM DUAL;
C. SELECT TO_ CHAR (SYSDATE, \’ FMDD, DAY MONTH, YYYY\’) FROM DUAL;
D. SELECT TO_ CHAR (SYSDATE, \’ FMDAY, DDTH MONTH, YYYY\’) FROM DUAL;
Correct Answer: A
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