> For the complete documentation index, see [llms.txt](https://docs.cybus.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cybus.io/2-6-1/guides/system-connectivity/databases-time-series-storage.md).

# Databases & Time-Series Storage

Integration guides for relational, time-series, and search databases such as PostgreSQL, InfluxDB, and Elasticsearch.

These guides describe how to persist shop floor data in relational databases, time-series databases, and search engines, and how to feed query results back into MQTT topics. The following guides are available:

| Guide                                                                                                                       | Connector                                                         | Description                                                     |
| --------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------- | --------------------------------------------------------------- |
| [Microsoft SQL Server](/2-6-1/guides/system-connectivity/databases-time-series-storage/microsoft-sql-server-integration.md) | [MSSQL](/2-6-1/connectors/enterprise-connectors/mssql.md)         | Write production events and poll query results.                 |
| [PostgreSQL](/2-6-1/guides/system-connectivity/databases-time-series-storage/postgresql-integration.md)                     | [SQL](/2-6-1/connectors/enterprise-connectors/sql.md)             | Write production events and poll query results.                 |
| [MariaDB](/2-6-1/guides/system-connectivity/databases-time-series-storage/mariadb-integration.md)                           | [SQL](/2-6-1/connectors/enterprise-connectors/sql.md)             | Write machine state changes and poll aggregated summaries.      |
| [TimescaleDB](/2-6-1/guides/system-connectivity/databases-time-series-storage/timescaledb-integration.md)                   | [SQL](/2-6-1/connectors/enterprise-connectors/sql.md)             | Write time-series data into hypertables and poll aggregates.    |
| [QuestDB](/2-6-1/guides/system-connectivity/databases-time-series-storage/questdb-integration.md)                           | [HTTP/REST](/2-6-1/connectors/enterprise-connectors/http-rest.md) | Stream time-series data using InfluxDB Line Protocol over HTTP. |
| [ClickHouse](/2-6-1/guides/system-connectivity/databases-time-series-storage/clickhouse-integration.md)                     | [HTTP/REST](/2-6-1/connectors/enterprise-connectors/http-rest.md) | Stream data into MergeTree tables over the HTTP interface.      |
| [Snowflake](/2-6-1/guides/system-connectivity/databases-time-series-storage/snowflake-integration.md)                       | [Kafka](/2-6-1/connectors/enterprise-connectors/kafka.md)         | Stream data to Snowflake via Kafka and Snowpipe Streaming.      |
| [InfluxDB](/2-6-1/guides/system-connectivity/databases-time-series-storage/influxdb-service-integration.md)                 | [InfluxDB](/2-6-1/connectors/enterprise-connectors/influxdb.md)   | Deploy InfluxDB as a service and store OPC UA data.             |
| [Elasticsearch](/2-6-1/guides/system-connectivity/databases-time-series-storage/elasticsearch-integration.md)               | [MQTT](/2-6-1/connectors/enterprise-connectors/mqtt.md)           | Ship data to Elasticsearch using the Filebeat MQTT input.       |


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