GetLockClient returns a lock client with default settings.

OpenDatabase opens a connection to the database using the DATABASE_URL environment variable.

GeographyColumn represents a data base table 'geography_columns'.

GeometryColumn represents a data base table 'geometry_columns'.

Lock represents a data base table 'locks'.

Message represents a data base table 'messages'.

SpatialRefSy represents a data base table 'spatial_ref_sys'.