Consistency is the “C” within the ACID properties required for validity within the occasion of errors, community partitions, and energy failures. The 4 ACID properties are Atomicity, Consistency, Isolation, and Sturdiness.

In case your database schemas are unlikely to vary considerably over time, and also you need most fields to have constant sorts from file to file, then SQL databases could be a sensible choice for you. In any other case, NoSQL databases, a few of which don’t even help schemas, could be higher on your software. There are exceptions, nevertheless. For instance, Rockset permits for SQL queries with out imposing a hard and fast schema or constant sorts on the information it imports.

When your database customers are all around the world, the velocity of sunshine imposes a decrease restrict on database latency for the distant customers until you present further servers of their areas. Some databases enable for distributed read-write servers; others supply distributed read-only servers, with all writes pressured to undergo a single grasp server. Geographic distribution makes the trade-off between consistency and latency even tougher.