> For the complete documentation index, see [llms.txt](https://docs.appstrategy.com/apprules-r-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.appstrategy.com/apprules-r-documentation/platform/platform-features/system-settings/data-sources/connection-settings/bigdata/greenplum.md). # Greenplum ### Connecting to Greenplum To connect to Greenplum, set the Server, Port (the default port is 5432), and Database connection properties and set the User and Password you want to use to authenticate to the server. If the Database property is not specified, the provider connects to the user's default database (it is the same name as the user). ### Authenticating to Greenplum The CData ADO.NET Provider for Greenplum supports the md5, password, Kerberos and SASL (particulary, SCRAM-SHA-256) authentication methods. The specific authentication method is setup in the pg\_hba.conf file on the Greenplum Server. You can find instructions about authentication setup on the Greenplum Server [here](https://www.postgresql.org/docs/13/auth-pg-hba-conf.html). The md5, password and SASL authentication methods do not require additional setup by the CData ADO.NET Provider for Greenplum. #### Kerberos The Greenplum Server initiates authentication with the Kerberos Server when the driver for Greenplum attempts a connection. You need to setup Kerberos on the Greenplum Server to activate this authentication method. After you have Kerberos authentication setup on the Greenplum Server, see [Using Kerberos](/apprules-r-documentation/appendix/miscellaneous/using-kerberos.md) for details on how to authenticate with Kerberos --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.appstrategy.com/apprules-r-documentation/platform/platform-features/system-settings/data-sources/connection-settings/bigdata/greenplum.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.