Software Development Exam > Software Development Questions > Consider the following SQL code:BEGIN TRANSAC...
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Consider the following SQL code:
BEGIN TRANSACTION;
UPDATE Products SET Price = Price * 1.1 WHERE Category = 'Electronics';
SAVEPOINT sp1;
UPDATE Products SET Price = Price * 1.2 WHERE Category = 'Furniture';
ROLLBACK TO sp1;
COMMIT;
What will be the output of this code?
BEGIN TRANSACTION;
UPDATE Products SET Price = Price * 1.1 WHERE Category = 'Electronics';
SAVEPOINT sp1;
UPDATE Products SET Price = Price * 1.2 WHERE Category = 'Furniture';
ROLLBACK TO sp1;
COMMIT;
What will be the output of this code?
- a)No output
- b)The Price values for products in the 'Electronics' category will be updated
- c)The transaction will be rolled back to the SAVEPOINT, and the changes in the 'Furniture' category will be undone
- d)The COMMIT statement will throw an error
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET ...
The output of the given SQL code will be option 'C', which means that the transaction will be rolled back to the SAVEPOINT, and the changes made in the Furniture category will be undone.
Here is the step-by-step explanation of the code execution:
1. BEGIN TRANSACTION: This statement starts a new transaction.
2. UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics: This statement updates the Price of all products in the Electronics category by multiplying it with 1.1.
3. SAVEPOINT sp1: This statement creates a savepoint named 'sp1', which allows us to roll back to this point later if needed.
4. UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture: This statement updates the Price of all products in the Furniture category by multiplying it with 1.2.
5. ROLLBACK TO sp1: This statement rolls back the transaction to the savepoint 'sp1'. It means that all the changes made after the savepoint will be undone.
6. COMMIT: This statement commits the transaction and makes all the changes permanent. However, since the code has a rollback statement before the commit, the changes made in step 4 will be undone, and the commit will not have any effect.
Therefore, the code will rollback to the savepoint 'sp1', and the changes made in the Furniture category will be undone. The Price values for products in the Electronics category will remain updated as per step 2.
Overall, the code will not produce any output, but it will rollback the changes in the Furniture category, resulting in only the changes in the Electronics category being retained.
Here is the step-by-step explanation of the code execution:
1. BEGIN TRANSACTION: This statement starts a new transaction.
2. UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics: This statement updates the Price of all products in the Electronics category by multiplying it with 1.1.
3. SAVEPOINT sp1: This statement creates a savepoint named 'sp1', which allows us to roll back to this point later if needed.
4. UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture: This statement updates the Price of all products in the Furniture category by multiplying it with 1.2.
5. ROLLBACK TO sp1: This statement rolls back the transaction to the savepoint 'sp1'. It means that all the changes made after the savepoint will be undone.
6. COMMIT: This statement commits the transaction and makes all the changes permanent. However, since the code has a rollback statement before the commit, the changes made in step 4 will be undone, and the commit will not have any effect.
Therefore, the code will rollback to the savepoint 'sp1', and the changes made in the Furniture category will be undone. The Price values for products in the Electronics category will remain updated as per step 2.
Overall, the code will not produce any output, but it will rollback the changes in the Furniture category, resulting in only the changes in the Electronics category being retained.
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Community Answer
Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET ...
The SAVEPOINT sp1 creates a savepoint in the transaction. The second UPDATE statement modifies the Price values in the 'Furniture' category, but the ROLLBACK TO sp1 statement will roll back the transaction to the savepoint, undoing the changes in the 'Furniture' category.
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Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer?
Question Description
Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer? for Software Development 2024 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Software Development 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer?.
Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer? for Software Development 2024 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Software Development 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Software Development.
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Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following SQL code:BEGIN TRANSACTION;UPDATE Products SET Price = Price * 1.1 WHERE Category = Electronics;SAVEPOINT sp1;UPDATE Products SET Price = Price * 1.2 WHERE Category = Furniture;ROLLBACK TO sp1;COMMIT;What will be the output of this code?a)No outputb)The Price values for products in the Electronics category will be updatedc)The transaction will be rolled back to the SAVEPOINT, and the changes in the Furniture category will be undoned)The COMMIT statement will throw an errorCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Software Development tests.
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