I've looked at APL descendants like J (jsoftware.com) and Q (kx.com), and found Q very interesting due to its underlying in-memory database, kdb+. It made me think of a way to experiment with it in OCaml. The idea is that once you marry vector/list processing with very fast SQL- like in-memory database, you get a fast and elegant formalism to transform the data. Is there anything which can be plugged into OCaml to play the role of the database? I guess even SQLite can be used with in-memory tables, or better yet PG'OCaml, yet it's the tight integration seems the main strength of kdb+...

Cheers,
Alexy

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