What are some examples of database transactions?

What are some examples of database transactions?

Database transactions are sequences of operations performed as a single logical unit of work. Examples include: 1. A bank transfer where money is deducted from one account and added to another. 2. An online order where inventory is updated, payment is processed, and a confirmation is sent. 3. A booking system where a seat is reserved and payment is confirmed.

Can you explain the bank transfer example in more detail?

Sure! In a bank transfer, the transaction involves two main operations: debiting the sender's account and crediting the recipient's account. Both operations must succeed for the transaction to be valid. If one fails, the entire transaction is rolled back to maintain data integrity.

What happens if there's an error during the transaction?

If an error occurs, the transaction is aborted, and all changes made during the transaction are undone. This ensures that the database remains in a consistent state, adhering to the ACID properties: Atomicity, Consistency, Isolation, and Durability.

Are there different types of database transactions?

Yes, there are several types of database transactions, including: 1. Read transactions, which only retrieve data. 2. Write transactions, which modify data. 3. Mixed transactions, which involve both reading and writing.