Some of the components are slightly different from those previously described. We call this group of components: Others.
Others serve to perform multiple and heterogeneous tasks.
As Others are heterogeneous group of components, they have no common properties.
checks foreign key values and replaces those invalid by default values.
executes SQL/DML/DDL statements against database.
sends HTTP requests and receives responses from web server.
reads data from a lookup table and/or writes data to a lookup table.
calls a web-service and maps response to output ports.
