How does consistency affect database systems?

What does consistency mean in the context of database systems?

In database systems, consistency ensures that any transaction will bring the database from one valid state to another, maintaining data integrity.

Why is consistency important for database transactions?

Consistency is crucial because it prevents data anomalies and ensures that all users see the same data at the same time, which is vital for reliable operations.

Can you explain the trade-offs between consistency and availability?

Certainly! The trade-off is often described by the CAP theorem, which states that in a distributed system, you can only guarantee two out of three: Consistency, Availability, and Partition Tolerance.

What are some common consistency models used in databases?

Common consistency models include strong consistency, eventual consistency, and causal consistency, each with different guarantees on data visibility.