2024/11/05

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2024-11-05 12:15:26 +0100 <haskellbridge> <hellwolf> I recalled a talk from "David Spivak: Categorical Databases". I appreciate people's relentless searches of composition, especially from mathematicians (Bartosz Milewski, et. al.) ... but sometimes someone just gotta find a concrete use case that others can understand and apply the insights.
2024-11-05 12:14:44 +0100 <ncf> Inst: as long as you can come up with a notion of homomorphism between instances of different schemas, sure ("there are none" is a valid answer)
2024-11-05 12:14:40 +0100 <probie> Inst: If it's not a normal relational database, then sum types may be easily supported :p. If you want to model it in a relational database and don't want to risk being two variants at once, you can have n columns, each being a nullable foreign key to that variant's table, and a constraint that exactly one of those columns is not null
2024-11-05 12:14:30 +0100supercode(~supercode@user/supercode) (Quit: Client closed)
2024-11-05 12:11:59 +0100 <ncf> this is the most programmer-brained introduction to presheaves i have ever seen
2024-11-05 12:11:38 +0100xff0x(~xff0x@2405:6580:b080:900:fc69:912f:320c:e811)
2024-11-05 12:11:11 +0100tomsmedingsneaks off
2024-11-05 12:11:06 +0100tomsmedinghas no clue what's going on on that page
2024-11-05 12:10:43 +0100 <Inst> as in, can a database table be in one of two different schemas?
2024-11-05 12:10:31 +0100 <Inst> wait, do database tables support sum types?
2024-11-05 12:10:08 +0100tomsmedingis out of comfort zone