# Kronotop > Kronotop is a distributed multi-model database built on FoundationDB. Kronotop provides two data models: Bucket, a document store queried with BQL, and ZMap, an ordered key-value map. Both live inside namespaces and share a single transaction model backed by FoundationDB. Clients talk to Kronotop over the RESP3 and RESP2 wire protocols. BQL treats every BSON type as distinct: there is no implicit type coercion between unrelated types, and numeric types compare across each other through lossless widening. ## Documentation Sets - [Abridged documentation](https://kronotop.com/llms-small.txt): a compact version of the documentation for Kronotop, with non-essential content removed - [Complete documentation](https://kronotop.com/llms-full.txt): the full documentation for Kronotop ## Notes - The complete documentation includes all content from the official documentation - The content is automatically generated from the same source as the official documentation