Questions tagged [column-oriented]

Column-oriented data storage holds all the values for one attribute contiguously on the storage medium. This arrangement facilitates aggregates but is less efficient when updating existing data.

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82 votes
9 answers

Efficiently storing real-time intraday data in an application agnostic way

What would be the best approach to handle real-time intraday data storage? For personal research I've always imported from flat files only into memory (historical EOD), so I don't have much ...
Karol J. Piczak's user avatar
13 votes
2 answers

Why use a column database for tick/bar data?

I often hear that column-oriented databases are the best choice method for storing time series data in finance applications. Especially by people selling expensive column-oriented databases. Yet, at ...
Darren Cook's user avatar
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1 vote
1 answer

What is a technical value?

I'm trying to get my head around the following Kaggle competition: The data is a frame made up of various columns, with a tuple structure ...
Julia Sterbs's user avatar