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NEW QUESTION 28
View the Exhibit and examine the data in the PROMOTIONS table.
PROMO_BEGIN_DATE is stored in the default date format, dd-mon-rr.
You need to produce a report that provides the name, cost, and start date of all promos in the POST category that were launched before January 1, 2000.
Which SQL statement would you use?
- A. SELECT promo_name, promo_cost, promo_begin_dateFROM promotionsWHERE promo_category = 'post' AND promo_begin_date < '01-01-00';
- B. SELECT promo_name, promo_cost, promo_begin_dateFROM promotionsWHERE promo_cost LIKE 'post%' AND promo_begin_date < '01-01-2000';
- C. SELECT promo_name, promo_cost, promo_begin_dateFROM promotionsWHERE promo_category LIKE 'P%' AND promo_begin_date < '1-JANUARY-00';
- D. SELECT promo_name, promo_cost, promo_begin_dateFROM promotionsWHERE promo_category LIKE '%post%' AND promo_begin_date < '1-JAN-00';
Answer: D
NEW QUESTION 29
Examine this query:
SELECT TRUNC (ROUND(156.00,-2),-1) FROM DUAL; What is the result?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: A
NEW QUESTION 30
Which two statements are true about the rules of precedence for operators? (Choose two.)
- A. Arithmetic operators with equal precedence area evaluated from left to right within an expression
- B. Multiple parentheses can be used to override the default precedence of operators in an expression
- C. The concatenation operator | | is always evaluated before addition and subtraction in an expression
- D. NULLS influence the precedence of operators in an expression
- E. The + binary operator has the highest precedence in an expression in a SQL statement
Answer: B,E
NEW QUESTION 31
You want to display the date for the first Monday of the next month and issue the following command:
What is the outcome?
- A. It executes successfully and returns the correct result.
- B. It executes successfully but does not return the correct result.
- C. In generates an error because TO_CHARshould be replaced with TO_DATE.
- D. In generates an error because fmand double quotation marks should not be used in the format string.
- E. In generates an error because rrrrshould be replaced by rrin the format string.
Answer: A
NEW QUESTION 32
These are the steps for a correlated subquery, listed in random order:
The WHERE clause of the outer query is evaluated.
A candidate row is fetched from the table specified in the outer query.
This is repeated for the subsequent rows of the table, until all the rows are processed.
Rows are returned by the inner query, after being evaluated with the value from the candidate row in the outer query.
Which is the correct sequence in which the Oracle server evaluates a correlated subquery?
- A. 2, 1, 4, 3
- B. 4, 1, 2, 3
- C. 2, 4, 1, 3
- D. 4, 2, 1, 3
Answer: C
Explanation:
http://rajanimohanty.blogspot.co.uk/2014/01/correlated-subquery.html
NEW QUESTION 33
Which three statements are true regarding the WHEREand HAVINGclauses in a SQL statement? (Choose three.)
- A. WHEREand HAVINGclauses cannot be used together in a SQL statement.
- B. The HAVINGclause is used to exclude one or more aggregated results after grouping data.
- C. The HAVINGclause conditions can use aliases for the columns.
- D. The HAVINGclause conditions can have aggregate functions.
- E. The WHEREclause is used to exclude rows before the grouping of data.
Answer: A,D,E
NEW QUESTION 34
View the Exhibit and examine the structure in the DEPARTMENTS tables. (Choose two.)
Examine this SQL statement:
SELECT department_id "DEPT_ID", department_name, 'b'
FROM departments
WHERE departments_id=90
UNION
SELECT department_id, department_name DEPT_NAME, 'a'
FROM departments
WHERE department_id=10
Which two ORDER BY clauses can be used to sort the output? (Choose two.)
- A. ORDER BY DEPT_NAME;
- B. ORDER BY DEPT_ID;
- C. ORDER BY 'b';
- D. ORDER BY 3;
Answer: B,D
NEW QUESTION 35
View the exhibit for the structure of the STUDENT and FACULTY tables.
You need to display the faculty name followed by the number of students handled by the faculty at the base location.
Examine the following two SQL statements:
Statement 1
SQL>SELECT faculty_name, COUNT(student_id)
FROM student JOIN faculty
USING (faculty_id, location_id)
GROUP BY faculty_name;
Statement 2
SQL>SELECT faculty_name, COUNT(student_id)
FROM student NATURAL JOIN faculty
GROUP BY faculty_name;
Which statement is true regarding the outcome?
- A. Only statement 1 executes successfully and gives the required result.
- B. Only statement 2 executes successfully and gives the required result.
- C. Both statements 1 and 2 execute successfully and give the same required result.
- D. Both statements 1 and 2 execute successfully and give different results.
Answer: A
NEW QUESTION 36
Examine the structure of the MEMBERS table:
You want to display details of all members who reside in states starting with the letter A followed by exactly one character.
Which SQL statement must you execute?
- A. SELECT * FROM MEMBERS WHERE state LIKE '%A_';
- B. SELECT * FROM MEMBERS WHERE state LIKE 'A_';
- C. SELECT * FROM MEMBERS WHERE state LIKE 'A%';
- D. SELECT * FROM MEMBERS WHERE state LIKE 'A_%';
Answer: B
NEW QUESTION 37
Which two statements are true about Oracle databases and SQL?
- A. Updates performed by a database user can be rolled back by another user by using the ROLLBACK command.
- B. A user can be the owner of multiple schemas In the same database.
- C. The database guarantees read consistency at select level on user-created tablers.
- D. A query can access only tables within the same schema.
- E. When you execute an UPDATE statement, the database instance locks each updated row.
Answer: C,E
NEW QUESTION 38
View the Exhibit and examine the details of the ORDER_ITEMS table.
Evaluate the following SQL statements:
Statement 1:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items;
Statement 2:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items
GROUP BY order_id;
Which statements are true regarding the output of these SQL statements? (Choose all that apply.)
- A. Statement 1 would not return give the same output.
- B. Statement 1 would return only one row of output.
- C. Both the statements would give the same output.
- D. Statement 2 would return multiple rows of output.
- E. Both statements would ignore NULL values for the UNIT_PRICE and QUANTITY columns.
Answer: B,D,E
NEW QUESTION 39
Evaluate the following ALTER TABLEstatement:
ALTER TABLE orders
SET UNUSED (order_date);
Which statement is true?
- A. The ORDER_DATEcolumn should be empty for the ALTER TABLEcommand to execute succsessfully.
- B. ROLLBACKcan be used to get back the ORDER_DATEcolumn in the ORDERStable.
- C. After executing the ALTER TABLEcommand, you can add a new column called ORDER_DATEto the ORDERStable.
- D. The DESCRIBEcommand would still display the ORDER_DATEcolumn.
Answer: C
NEW QUESTION 40
Examine this list of requirements for a sequence:
1. Name:EMP_SEQ
2. First value returned:1
3. Duplicates are never permitted.
4. Provide values to be inserted into the EMPLOYEES.EMPLOYEE_ID COLUMN.
5. Reduce the chances of gaps in the values.
Which two statements will satisfy these requirements?
- A. CREATE SEQUENCE emp_seq;
- B. CREATE SEQUENCE emp_seq START WITH 1 INCRENENT BY 1 NOCACHE;
- C. CREATE SEQUENCE emp_seq START WITH 1 INCREMENT BY 1 CYCLE;
- D. CREATE SEQUENCE emp_seq START WITH 1 INCREMENT BY 1 CACHE;
- E. CREATE SEQUENCE emp_seq START WITH 1 CACHE;
- F. CREATE SEQUENCE emp_seq NOCACHE;
Answer: B,F
NEW QUESTION 41
View the exhibit and examine the structure of the CUSTOMERStable.
Which two tasks would require subqueries or joins to be executed in a single statement?
- A. finding the number of customers, in each city, whose marital status is 'married'.
- B. listing of those customers, whose credit limit is the same as the credit limit of customers residing in the city
'Tokyo'. - C. listing of customers who do not have a credit limit and were born before 1980
- D. finding the average credit limit of male customers residing in 'Tokyo'or 'Sydney'
- E. finding the number of customers, in each city, whose credit limit is more than the average credit limit of all the customers
Answer: B,E
NEW QUESTION 42
Which statement is true regarding the USINGclause in table joins? (Choose two.)
- A. It can be used to access data from tables through equijoins as well as nonequijoins.
- B. It can be used to join a maximum of three tables.
- C. It can be used to join tables that have columns with the same name and compatible data types.
- D. It can be used to restrict the number of columns used in a NATURALjoin.
Answer: C,D
Explanation:
Explanation
NEW QUESTION 43
View the exhibit and examine the structure in ORDERS and ORDER_ITEMS tables.
You need to create a view that displays the ORDER_ID, ORDER_DATE, and the total number of items in each order.
Which CREATE VIEW statement would create the view successfully?
- A. CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date, COUNT(i.line_item_id)||'NO OF ITEMS'FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id,o.order_dateWHITH CHECK OPTION;
- B. CREATE OR REPLACE VIEW ord_vu (order_id, order_date)AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id)"NO OF ITEMS"FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id, o.order_date;
- C. CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date, COUNT(i.line_item_id)"NO OF ITEMS"FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id,o.order_date;
- D. CREATE OR REPLACE VIEW ord_vuAS SELECT o.order_id, o.order_date, COUNT(i.line_item_id)FROM orders o JOIN order_items iON (o.order_id = i.order_id)GROUP BY o.order_id,o.order_date;
Answer: C
NEW QUESTION 44
View the exhibits and examine the structures of the COSTS and PROMOTIONS tables.
Evaluate the following SQL statement:
What would be the outcome of the above SQL statement?
- A. It displays prod IDs in the promos with the highest cost in the same time interval.
- B. It displays prod IDs in the promo with the lowest cost.
- C. It displays prod IDs in the promos with the lowest 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 45
Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEE_ID column is indexed.
Rows exist for employees 100 and 200.
Examine this statement:
Which two statements are true? (Choose two.)
- A. Employees 100 and 200 will have the same JOB_ID as before the update command
- B. Employees 100 will have JOB_ID set to the same value as the JOB_ID of employee 200
- C. Employee 200 will have SALARY set to the same value as the SALARY of employee 100
- D. Employees 100 and 200 will have the same SALARY as before the update command
- E. Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100
- F. Employee 100 will have SALARY set to the same value as the SALARY of employee 200
Answer: B,F
NEW QUESTION 46
Examine this query:
SELECT SUBSTR (SYSDATE, 1, 5) ''Result '' FROM DUAL;
Which statement Is true?
- A. It fails unless the expression is modified to to_char (Substr (sysdate, 1, 5) ) .
- B. It executes successfully with an implicit data type conversion.
- C. It falls unless the expression is modified to substr (tociiar (Trunc (svsdate) ) , 1, 5).
- D. It fails unless the expression is modified to substr (to_char (sysdate) , 1, 5S).
Answer: B
NEW QUESTION 47
Examine this query:
SELECT TRUNC(ROUND(156.00, -2), -1) FROM DUAL;
What is the result?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: E
Explanation:
Explanation
Reference https://docs.oracle.com/cd/B19306_01/server.102/b14200/functions200.htm
NEW QUESTION 48
Examine the structure of the MARKS table:
Which two statements would execute successfully? (Choose two.)
- A. SELECT student_name,SUM(subject1)FROM marksWHERE student_name LIKE 'R%';
- B. SELECT SUM(DISTINCT NVL(subject1,0)), MAX(subject1)FROM marksWHERE
subject1 > subject2; - C. SELECT student_name subject1FROM marksWHERE subject1 > AVG(subject1);
- D. SELECT SUM(subject1+subject2+subject3)FROM marksWHERE student_name IS NULL;
Answer: B,D
NEW QUESTION 49
Which three are key components of an Entity Relationship Model? (Choose three.)
- A. a table
- B. an attribute
- C. a relationship
- D. a unique identifier
- E. an entity
- F. an activity
Answer: B,C,E
Explanation:
The three main components of the ER Model are entities, attributes and relationships.
Reference: https://www.dlsweb.rmit.edu.au/Toolbox/knowmang/content/data_concepts/e_r_model.htm
NEW QUESTION 50
Examine the description of the EMP_DETAILS table given below:
Which two statements are true regarding SQL statements that can be executed on the EMP_DETAIL TABLE?
- A. You can alter the table to include the NOT NULL constraint on the EMP_IMAGE column.
- B. An EMP_IMAGE column can be included in the GROUP BY clause.
- C. An EMP_IMAGE column cannot be included in the ORDER BY clause.
- D. You cannot add a new column to the table with LONG as the data type.
Answer: C,D
NEW QUESTION 51
Which three statements are true regarding subqueries?
- A. Subqueries can contain GROUP BY and ORDER BY clauses.
- B. Only one column or expression can be compared between the main query and subquery.
- C. Main query and subquery can get data from different tables.
- D. Subqueries can contain ORDER BY but not the GROUP BY clause.
- E. Main query and subquery must get data from the same tables.
- F. Multiple columns or expressions can be compared between the main query and subquery.
Answer: A,C,F
Explanation:
References:
http://docs.oracle.com/javadb/10.6.2.1/ref/rrefsqlj13658.html
NEW QUESTION 52
You issued this command:
Which three statements are true?
- A. All constraints defined on HR.EMPLOYEES are dropped.
- B. Views referencing HR.EMPLOYEES are dropped.
- C. The HR.EMPLOYEES table may be moved to the recycle bin.
- D. All indexes defined on HR.EMPLOYEES are dropped.
- E. Sequences used to populate columns in the HR.EMPLOYEES table are dropped.
- F. Synonyms for HR.EMPLOYEES are dropped.
Answer: A,B,D
NEW QUESTION 53
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