# Data Abstractions

> For the complete documentation index, see [llms.txt](https://kotlin.github.io/dataframe/llms.txt).

* [DataColumn](datacolumn.html) is a named, typed and ordered collection of elements

* [DataFrame](dataframe.html) consists of one or several [DataColumns](datacolumn.html) with unique names and equal size

* [DataRow](datarow.html) is a single row of [DataFrame](dataframe.html) and provides a single value for every [DataColumn](datacolumn.html)

API reference: [DataFrame](https://kotlin.github.io/dataframe/api-docs/core/org.jetbrains.kotlinx.dataframe/-data-frame/index.html), [DataColumn](https://kotlin.github.io/dataframe/api-docs/core/org.jetbrains.kotlinx.dataframe/-data-column/index.html), [DataRow](https://kotlin.github.io/dataframe/api-docs/core/org.jetbrains.kotlinx.dataframe/-data-row/index.html)