# Reference Guides

- [Databricks Spark Integration](/2024.2/data-and-integrations/databricks-spark/reference-guides/databricks.md)
- [Databricks Spark Pre-Configuration Details](/2024.2/data-and-integrations/databricks-spark/reference-guides/pre-configuration.md)
- [Configuration Settings](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings.md)
- [Cluster Policies](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/cluster-policies.md)
- [Python & SQL](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/cluster-policies/python-sql.md)
- [Python & SQL & R](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/cluster-policies/python-sql-r.md)
- [Python & SQL & R with Library Support](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/cluster-policies/python-sql-r-lib-support.md)
- [Scala](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/cluster-policies/scala.md)
- [Sparklyr](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/cluster-policies/sparklyr.md)
- [Environment Variables](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/configuration.md)
- [Ephemeral Overrides](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/ephemeral-overrides.md)
- [Py4j Security Error](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/py4j-error.md)
- [Scala Cluster Security Details](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/scala-security.md)
- [Databricks Security Configuration for Performance](/2024.2/data-and-integrations/databricks-spark/reference-guides/configuration-settings/security-config-for-performance.md)
- [Databricks Change Data Feed](/2024.2/data-and-integrations/databricks-spark/reference-guides/change-data-feed.md)
- [Databricks Libraries Introduction](/2024.2/data-and-integrations/databricks-spark/reference-guides/databricks-libraries.md)
- [Delta Lake API](/2024.2/data-and-integrations/databricks-spark/reference-guides/delta-lake-api.md): Delta Lake API reference guide
- [Spark Direct File Reads](/2024.2/data-and-integrations/databricks-spark/reference-guides/direct-file-reads.md)
- [Databricks Metastore Magic](/2024.2/data-and-integrations/databricks-spark/reference-guides/metastore-magic.md)