Repository: xtdb/core2 Branch: main Commit: 58915cc8058c Files: 1 Total size: 1.4 KB Directory structure: gitextract_nz5au5hw/ └── README.adoc ================================================ FILE CONTENTS ================================================ ================================================ FILE: README.adoc ================================================ = XTDB 'core2' Research 🧪 Welcome to the XTDB research repository! NOTE: Core2 now lives in the main XTDB repo, under the https://github.com/xtdb/xtdb/tree/2.x[2.x] branch. --- core2 is a bitemporal and dynamic relational database for SQL and Datalog: - Bitemporal means that all data is accurately versioned as updates are made (system time), and all data exists within a universal domain timeline for representing 'validity'/'effectivity' (application time). - Dynamic means that no upfront schema needs to be specified before records can be inserted. Complex and nested data is automatically represented using https://arrow.apache.org/[Apache Arrow] types. - Relational means that the full spectrum of traditional SQL database capabilities is available - including joins, transactions, https://en.wikipedia.org/wiki/Multiset#Applications[bag/multiset] semantics, https://en.wikipedia.org/wiki/Three-valued_logic[three-valued logic], multiple N-ary relations etc. - SQL means immediate accessibility for a mainstream audience, but also includes an eye to the future with preliminary https://arrow.apache.org/blog/2022/02/16/introducing-arrow-flight-sql/[Flight SQL] driver support. - https://en.wikipedia.org/wiki/Datalog[Datalog] means a programmer-friendly API for complex relational querying that bypasses SQL's verbose JOINs and https://www.scattered-thoughts.net/writing/against-sql/[compositional challenges].
gitextract_nz5au5hw/ └── README.adoc
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