8. What is a Transaction?
In databases, there is a concept called a Transaction. It is a unit that groups multiple commands together.
It starts with the BEGIN keyword, and when you Commit, the changes are written to disk. If the transaction does not complete properly, you must ROLLBACK.
Stay tuned for That. There's another example of how a transaction works. We talk about this in an forEachTrailingCommentRange, let's have this as a table right. The balance for Account ID 1 is 1000 USD. We want to sent $100 from account one to account two How whould you build it, Stop this recording and then do it yourself and then movo on Obviously the slides are available for you, if you want to do it yourself
You begin a transaction transaction number one and then we select the balance from account whare ID equal onemptied You can put this int the application like what we're doing right NoWorkResult, and you can put this contstraint in the applicaiton level or in the database level
And If you ever see data that is negative, that is indication of an inconsistent data, and now I'm mentioning a few things over the opera properties as you notice right, as we discussed the transaction
Quiz
Q1: What is the main topic covered in "DataBase Engineering Section 2 ACID"?
Fundamentals of Database Engineering Section 2 ACID
Q2: What are the key takeaways from this article?
Fundamentals of Database Engineering Section 2 ACID
Q3: How can the concepts in this article be applied in practice?
Consider the practical examples and patterns discussed throughout the post.