Transaction is a logical unit of one or more Insert, Update, and Delete statements. Transaction is useful when you want to do multiple operations on the database. Either all the changes that are successful would be committed, unsuccessful ones would be undone, or errors generated during execution would perform transactions rolled back. The InnoDB storage engine supports the rollback of transactions. The goal of the InnoDB storage model is to combine the best properties of a multi-versioning database with two-phase locking. InnoDB performs locking at the row level and runs queries as non-locking for consistent reads by default for better performance and integrity of data.
Let's take an example to understand where transaction is useful. Consider a banking database. Suppose a bank customer want to transfers money from his account to another account. Generally...
