Notes / MySQL Transactions

Why should you not use your notepad as a coaster? This is why:

The notes did say this, before my lovely hot black coffee destroyed them:

“begin”
== Start transaction

“commit”
== End transaction, saving all changes

“rollback”
== Undo all changes that you’ve made in the transaction

What are they? In mySQL 5, with a table storage type of “innodb” you can [...]