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NEW QUESTION 48
Which task can be performed by using a single Data Manipulation Language (DML) statement?
- A. adding a column with a default value while inserting a row into a table
- B. removing all data only from a single column on which a primary key constraint is defined
- C. adding a column constraint while inserting a row into a table
- D. removing all data from a single column on which a unique constraint is defined
Answer: D
NEW QUESTION 49
Examine the data in the ORDERS table:
Examine the data in the INVOICE table:
Examine this query:
Which three rows will it return?
- A. 2 <null>
- B. 5 <null>
- C. 1 <null>
- D. 4 01-FEB-2019
- E. 3 01-JAN-2019
- F. 3 <null>
- G. 5 01-MAR-2019
Answer: A,E,G
NEW QUESTION 50
Evaluate the following query:
Which is the correct output of the above query?
- A. +25-00, +54-02, +00 11:12:10.123457
- B. +25-00,+00-650,+00 11:12:10.123457
- C. +00-300, +54-02,+00 11:12:10.123457
- D. +00-300,+00-650,+00 11:12:10.123457
Answer: A
NEW QUESTION 51
View the exhibit and examine the structure of the PROMOTIONStable.
You have to generate a report that displays the promo name and start date for all promos that started after the last promo in the ‘INTERNET’ category.
Which query would give you the required output?
SELECT promo_name, promo_begin_date FROM promotions
- A. SELESELECT promo_name, promo_begin_date FROM promotions
WHERE promo_begin_date IN (SELECT promo_begin_date
FROM promotions
WHERE promo_category= ‘INTERNET’);
SELECT promo_name, promo_begin_date FROM promotions - B. WHERE promo_begin_date> ANY (SELECT promo_begin_date
FROM promotions
WHERE promo_category= ‘INTERNET’); - C. WHERE promo_begin_date > ALL (SELECT promo_begin_date
FROM promotions
WHERE promo_category = ‘INTERNET’);
SELECT promo_name, promo_begin_date FROM promotions - D. WHERE promo_begin_date> ALL (SELECT MAX (promo_begin_date)
FROM promotions) AND
promo_category= ‘INTERNET’;
Answer: C
Explanation:
Explanation
NEW QUESTION 52
……
