A computer-implemented method includes receiving a selection of a particular logical field via a database query interface. The method includes querying a discovery registry associated with a data abstraction model of a database to discover one or more web services that are resolvable based on the particular logical field. The data abstraction model includes a plurality of logical fields, where each logical field corresponds to a particular data structure of the database. A web service input and a web service output of a particular discovered web service are associated with logical fields of the data abstraction model via the discovery registry. A modified database query interface includes an input assistance selectable input associated with the discovered web services. In response to a selection of the input assistance selectable input, a form input interface may be displayed that includes one or more input forms associated with the discovered web services.