> For the complete documentation index, see [llms.txt](https://upsolver.gitbook.io/content/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://upsolver.gitbook.io/content/reference-1/sql-commands/connections.md).

# Connections

Connections are used to provide Upsolver with the appropriate credentials to ingest your data into Upsolver as well as to write out your transformed data to various services.

To create a new connection, simply provide the required credentials and configure any optional connection properties relevant to your requirements. 

{% hint style="info" %}
Note that only some of the connection options can be edited after the connection has been created.
{% endhint %}

### SQL connection commands

* [CREATE CONNECTION](/content/reference-1/sql-commands/connections/create-connection.md)
* [ALTER CONNECTION](/content/reference-1/sql-commands/connections/alter-connection.md)
* [DROP CONNECTION](/content/reference-1/sql-commands/connections/drop-connection.md)

## Supported connections

### Cloud Storage

* [Amazon S3](/content/reference-1/sql-commands/connections/create-connection/amazon-s3.md)

### Metastores

* [AWS Glue Data Catalog](/content/reference-1/sql-commands/connections/create-connection/aws-glue-data-catalog.md)
* [Hive Metastore](/content/reference-1/sql-commands/connections/create-connection/hive-metastore.md)
* [Polaris Catalog](/content/reference-1/sql-commands/connections/create-connection/polaris-catalog.md)

### Streaming systems

* [Apache Kafka](/content/reference-1/sql-commands/connections/create-connection/apache-kafka.md)
* [Amazon Kinesis](/content/reference-1/sql-commands/connections/create-connection/amazon-kinesis.md)
* [Confluent Kafka](/content/reference-1/sql-commands/connections/create-connection/confluent-cloud.md)

### Databases

* [Amazon Redshift](/content/reference-1/sql-commands/connections/create-connection/amazon-redshift.md)
* [ClickHouse](/content/reference-1/sql-commands/connections/create-connection/clickhouse.md)
* [Elasticsearch](/content/reference-1/sql-commands/connections/create-connection/elasticsearch.md)
* [Microsoft SQL Server](/content/reference-1/sql-commands/connections/create-connection/microsoft-sql-server.md)
* [MongoDB](/content/reference-1/sql-commands/connections/create-connection/mongodb.md)
* [MySQL](/content/reference-1/sql-commands/connections/create-connection/mysql.md)
* [PostgreSQL](/content/reference-1/sql-commands/connections/create-connection/postgresql.md)
* [Snowflake](/content/reference-1/sql-commands/connections/create-connection/snowflake.md)


---

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