temporal database - Datomic: what use cases can you name of its ability to handle time -


the ability @ data in past seems useful it's not clear me how use it. domains benefit feature? maybe there well-known use cases of 'temporality'?

philosophy

it quite hard, , not necessary list of domains. answer question more valuable if provided domain(s) you consider datomic for.

i not think of time history or feature, rather natural dimension "we use" day day in domains whether software or not.

having said can think of 2 domains considered , used datomic in:

trading

you can see simplified way wall street works , thinks looking at

enter image description here

one thing notice here: everything time , "timing".

when kind of financial analytics needed, whether future forecast or adjusting current market movement, time based thinking (read "queries, design, ui, etc..") not crucial, natural.

everybody works bits, zeros , ones, , ways archive thinking many, if bits organized in way tell them "show me quotes x time y time, , slice them trades happen @ interval, , show me firms traded right before.." , bits understand , provide data big win. (vs. having own implementation). interesting use forecasting datomic's "with"

identity

people identified differently everywhere: driver's license, passport, social security number, gym card, credit card, home address, etc.. unique combination of these identifies person, or family, or business, or random group of humans, etc.

but what's interesting, these ids keep changing on time.. constantly. not useful identify person/group any of ids "now", necessary able travel back, , forward: "what credit score of person/business if he/it had credit card (account number)?"

philosophy

while above 2 unrelated , narrow domains, real. , yes can add timestamp db records/documents/kv/column families/"what not", it'll give that: "timestamps" no actual system perception of time. datomic give perception. , more that, question.


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