The IMSServiceRequester class contains the DL/I calls for obtaining the system services of IMS DB and IMS TM. Your program can request information and provide services to either the IMS DB or the IMS TM using the methods in IMSServiceRequester. See IMS/ESA Application Programming: DL/I Calls for more information about obtaining system services for IMS DB calls. See Application Programming: Data Communication for more information about obtaining system services for IMS TM calls.
See IMSServiceRequester class for a list of the DL/I calls you can make from IMSServiceRequester.