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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What is a technical value?

I'm trying to get my head around the following Kaggle competition: https://www.kaggle.com/c/two-sigma-financial-modeling/data The data is a frame made up of various columns, with a tuple structure ...
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2answers
6k views

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 ...
77
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9answers
34k views

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 ...