A method to process UDFs includes performing, by at least one hardware processor of a database system, a resolution of application components to determine a plurality of resolved components of an application and a plurality of data types corresponding to the plurality of resolved components. The method includes instantiating a plurality of UDF clients. The plurality of UDF clients are associated with the plurality of data types. The method includes detecting a received database query specifies a data type of the plurality of data types. The method includes executing the received database query at a UDF client of the plurality of UDF clients.