Using a Custom Protocol

A custom protocol allows you to connect LightDB-A Database to a data source that cannot be accessed with the file://, gpfdist://, or pxf:// protocols.

Creating a custom protocol requires that you implement a set of C functions with specified interfaces, declare the functions in LightDB-A Database, and then use the CREATE TRUSTED PROTOCOL command to enable the protocol in the database.

See Example Custom Data Access Protocol for an example.

Parent topic: Defining External Tables