A dataframe is usually a list of columns. Columns are usually typed arrays that have a name. It's a bit like a struct of arrays (https://en.wikipedia.org/wiki/A

A dataframe is usually a list of columns. Columns are usually typed arrays that have a name. It's a bit like a struct of arrays (https://en.wikipedia.org/wiki/AoS_and_SoA https://en.wikipedia.org/wiki/AoS_and_SoA) except that you can usually easily transform the dataframe (add columns, split columns, stuff like that).