Databases Demystified Chapter 4 – Transactions Part 1

This blog post delves into transactional databases, focusing on the concept of database transactions and their importance in maintaining data integrity. A transaction is a collection of commands that must all be executed together to ensure successful completion or permanent rollback. The ACID properties (Atomicity, Consistency, Isolation, Durability) are crucial for understanding how transactions work. Atomicity ensures that transactions happen completely or not at all, while consistency maintains valid states and prevents invalid transitions. Isolation prevents transactions from interfering with each other, and durability ensures that committed changes are saved to disk and considered permanent until subsequent modifications occur. The series continues with a closer look at isolation levels and locks in the next chapter.