* sqlite -> monetdb-lite-c + fts5 + bayesdb
* fts5 + regex + tre/fuzzy + codesearch/trigram filters, streaming bloom filters https://arxiv.org/abs/2001.03147
* datalog to "goblin relational engine" (gtk)
* branching distributed wal (chain replication) and CRDTs
* alf:fn query language
* datatypes via bit syntax+some code?
* pure lang?

 * https://github.com/dahjelle/pouch-datalog
 * https://github.com/edn-query-language/eql
 * https://github.com/borkdude/jet
 * https://github.com/walmartlabs/dyn-edn
 * https://github.com/go-edn/edn
 * https://github.com/smothers/cause
 * https://github.com/oscaro/eq
 * https://github.com/clojure-emacs/parseedn
 * https://github.com/exoscale/seql
 * https://github.com/axboe/liburing

 * (EAVtf) - entity attribute value type flags

 * distributed, replicated WAL
   * https://github.com/mirage/irmin

 * What if facts had "confidence" [0-1)?
   * entity attribute value type flags
   * https://github.com/probcomp/BayesDB
   * https://github.com/probcomp/bayeslite
   * http://probcomp.csail.mit.edu/software/bayesdb/