Consistency

/ˌstæn.dər.daɪˈzeɪ.ʃən/

noun — “the art of making everyone play by the same rules so chaos doesn’t sneak into your data.”

/ˈeɪ-sɪd/

n. “Guaranteeing your data behaves — no surprises allowed.”

ACID is an acronym describing the foundational properties of reliable database transactions: Atomicity, Consistency, Isolation, and Durability. These principles ensure that when data is read, written, or updated, it behaves predictably — even under crashes, concurrent access, or network issues.