# Columnstore

The columnstore is the default table type in SingleStore. Columnstore is also known as **Universal Storage**. The following sections explain the basic concepts of columnstore/Universal Storage.

## In this section

* [How the Columnstore Works](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/how-the-columnstore-works.md)
* [Writing Columnstore Data](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/writing-columnstore-data.md)
* [Locking in Columnstores](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/locking-in-columnstores.md)
* [Managing Columnstore Segments](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/managing-columnstore-segments.md)
* [Encoded Data in Columnstores](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/encoded-data-in-columnstores.md)
* [Highly Selective Joins](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/highly-selective-joins.md)
* [Columnstore Seekability using JSON](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/columnstore-seekability-using-json.md)
* [Columnstore Sizing Estimations](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/columnstore-sizing-estimations.md)
* [Universal Storage](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/universal-storage.md)

***

Modified at: April 15, 2025

Source: [/db/v9.1/create-a-database/columnstore/](https://docs.singlestore.com/db/v9.1/create-a-database/columnstore/)

(An index of the documentation is available at /llms.txt)