Answer:
IMS (Information Management System) is IBM’s hierarchical database management system. It has mainly two components: IMS DB and IMS DC (also know as IMS TM)
IMS DB - IMS/Database Manager as the name implies manages the IMS databases. It is used for physical storage creation and management and data retrieval.
IMS DC / IMS TM - IMS/Data Communications or IMS/Transaction Manager handles online transaction processing system.
IMS DB - IMS/Database Manager as the name implies manages the IMS databases. It is used for physical storage creation and management and data retrieval.
IMS DC / IMS TM - IMS/Data Communications or IMS/Transaction Manager handles online transaction processing system.
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