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Q31. You need to list the employees in DEPARTMENT_ID 30 in a single row, ordered by HIRE_DATE. 

Examine the sample output: 

Which query will provide the required output? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Reference: http://docs.oracle.com/cd/E11882_01/server.112/e10592/functions089.htm 


Q32. View the Exhibit and examine the data in the employees table: 

You want to display all the employee names and their corresponding manager names. Evaluate the following query: 

Which join option can be used in the blank in the above query to get the required output? 

A. INNER JOIN 

B. FULL OUTER JOIN 

C. LEFT OUTER JOIN 

D. RIGHT OUTER JOIN 

Answer:


Q33. View the Exhibits and examine the structures of the products and sales tables. 

Which two SQL statements would give the same output? A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: A,C 


Q34. 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: 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 different results. 

D. Both statements 1 and 2 execute successfully and give the same required result. 

Answer:


Q35. You want to create a table employees in which the values of columns EMPLOYEES_ID and LOGIN_ID must be unique and not null. Which two SQL statements would create the required table? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

E. Option E 

F. Option F 

Answer: D,E 


Q36. View the Exhibit and examine the structure of the product, component, and PDT_COMP tables. 

In product table, PDTNO is the primary key. 

In component table, COMPNO is the primary key. 

In PDT_COMP table, <PDTNO, COMPNO) is the primary key, PDTNO is the foreign key referencing PDTNO in product table and COMPNO is the foreign key referencing the COMPNO in component table. 

You want to generate a report listing the product names and their corresponding component names, if the component names and product names exist. 

Evaluate the following query: 

SQL>SELECT pdtno, pdtname, compno, compname 

FROM product _____________ pdt_comp 

USING (pdtno) ____________ component USING (compno) 

WHERE compname IS NOT NULL; 

Which combination of joins used in the blanks in the above query gives the correct output? 

A. JOIN; JOIN 

B. FULL OUTER JOIN; FULL OUTER JOIN 

C. RIGHT OUTER JOIN; LEFT OUTER JOIN 

D. LEFT OUTER JOIN; RIGHT OUTER JOIN 

Answer:


Q37. The customers table has the following structure: 

You need to write a query that does the following tasks: 

1. Display the first name and tax amount of the customers. Tax is 5% of their credit limit. 

2. Only those customers whose income level has a value should be considered. 

3. Customers whose tax amount is null should not be considered. 

Which statement accomplishes all the required tasks? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q38. View the Exhibit and examine the structure of the customers table. 

Using the customers table, you need to generate a report that shows an increase in the credit limit by 15% for all customers. Customers whose credit limit has not been entered should have the message "Not Available" displayed. 

Which SQL statement would produce the required result? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: 

NVL Function 

Converts a null value to an actual value: 

Data types that can be used are date, character, and number. 

Data types must match: 

– NVL(commission_pct, 0) 

– NVL(hire_date, '01-JAN-97') 

– NVL(job_id, 'No Job Yet') 


Q39. Examine the structure proposed for the transactions table: 

Which two statements are true regarding the creation and storage of data in the above table structure? 

A. The CUST_STATUS column would give an error. 

B. The TRANS_VALIDITY column would give an error. 

C. The CUST_STATUS column would store exactly one character. 

D. The CUST_CREDIT_LIMIT column would not be able to store decimal values. 

E. The TRANS_VALIDITY column would have a maximum size of one character. 

F. The TRANS_DATE column would be able to store day, month, century, year, hour, minutes, seconds, and fractions of seconds 

Answer: B,C 

Explanation: 

VARCHAR2(size)Variable-length character data (A maximum size must be specified: 

minimum size is 1; maximum size is 4, 000.) 

CHAR [(size)] Fixed-length character data of length size bytes (Default and minimum size 

is 1; maximum size is 2, 000.) 

NUMBER [(p, s)] Number having precision p and scale s (Precision is the total number of 

decimal digits and scale is the number of digits to the right of the decimal point; precision 

can range from 1 to 38, and scale can range from –84 to 127.) 

DATE Date and time values to the nearest second between January 1, 4712 B.C., and 

December 31, 9999 A.D. 


Q40. Which two statements are true regarding single row functions? 

A. MOD: returns the quotient of a division B. TRUNC: can be used with number and date values 

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

D. SYSDATE: returns the database server current date and time 

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

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

Answer: B,D 

Explanation: 

ROUND: Rounds value to a specified decimal TRUNC: Truncates value to a specified decimal MOD: Returns remainder of division SYSDATE is a date function that returns the current database server date and time. 

Date-Manipulation Functions Date functions operate on Oracle dates. All date functions return a value of the DATE data type except MONTHS_BETWEEN, which returns a numeric value. MONTHS_BETWEEN(date1, date2): Finds the number of months between date1 and date2. The result can be positive or negative. If date1 is later than date2, the result is positive; if date1 is earlier than date2, the result is negative. The noninteger part of the result represents a portion of the month. ADD_MONTHS(date, n): Adds n number of calendar months to date. The value of n must be an integer and can be negative. NEXT_DAY(date, 'char'): Finds the date of the next specified day of the week ('char') following date. The value of char may be a number representing a day or a character string. LAST_DAY(date): Finds the date of the last day of the month that contains date The above list is a subset of the available date functions. ROUND and TRUNC number functions can also be used to manipulate the date values as shown below: ROUND(date[, 'fmt']): Returns date rounded to the unit that is specified by the format model fmt. If the format model fmt is omitted, date is rounded to the nearest day. TRUNC(date[, 'fmt']): Returns date with the time portion of the day truncated to the unit that is specified by the format model fmt. If the format model fmt is omitted, date is truncated to the nearest day. 

The CONCAT Function The CONCAT function joins two character literals, columns, or expressions to yield one larger character expression. Numeric and date literals are implicitly cast as characters when they occur as parameters to the CONCAT function. Numeric or date expressions are evaluated before being converted to strings ready to be concatenated. The CONCAT function takes two parameters. Its syntax is CONCAT(s1, s2), where s1 and s2 represent string literals, character column values, or expressions resulting in character values. 

The INSTR(source string, search item, [start position], [nth occurrence of search item]) 

function returns a number that represents the position in the source string, beginning from 

the given start position, where the nth occurrence of the search item begins: 

instr('http://www.domain.com', '.', 1, 2) = 18 

The TRIM function literally trims off leading or trailing (or both) character strings from a 

given source string: