Until two days ago, I didn’t know anything about Kdb+, a 16 year old solution,:
[…] a fast database for analyzing massive volumes of data.
Kdb+ is a unified database capturing and analyzing streaming and historical data.
I’ll have to read the papers to make sure I understand better what Kdb+ is:
But if you know something, don’t be shy and share it with us!
Update: I got this link from @lsbardel: A first look at kdb+, the article containing interesting info about kdb+:
kdb+ has embedded a Kx propriety language called q [… which] is a proprietary array processing language developed by Arthur Whitney. The language serves as the query language for kdb+. q evolved from APL as explained by its author in an ☞ interview.
The backbone of the q language is formed by atoms, lists, dictionaries and tables.
As any serious propriety software, kdb+ provides native interfaces in C/C++, Java, C# and Python.
[read the whole article]