A method for managing a plurality of subsystems (112a, 112b, 112c, 112d) of a process plant by controlling process parameters of a process in the process plant, wherein each subsystem of the plurality of subsystems (112a, 112b, 112c, 112d) comprises at least one of a field device and a process equipment, wherein the process plant is controlled using a Distributed Control System with a plurality of databases (114a, 114b, 114c, 114d, 114e) distributed within the process plant, wherein each database of the plurality of databases comprises information corresponding to at least one subsystem of the plurality of subsystems (112a, 112b, 112c, 112d), wherein the information corresponding to a subsystem of the plurality of subsystems is at least one of a state information, a technical specification information and a measurement information with at least one of a field device and a process equipment of the subsystem, the method comprising: receiving a query at a human machine interface of the Distributed Control System, wherein the query is of a predetermined type and is associated with at least one of an operation and health of a subsystem of the plurality of subsystems (112a, 112b, 112c, 112d); identifying at a server of the Distributed Control System, a database of the plurality of databases (114a, 114b, 114c, 114d, 114e) comprising information corresponding to the subsystem, wherein the database is identified based on the query; processing the query at the server, based on the information corresponding to the subsystem available on the database, wherein processing the query comprises: identifying at least one of a model and a model ensemble based on the predetermined type of the query and the information corresponding to the subsystem, wherein at least one of the model and the model ensemble is identified from the said database or another database of the plurality of databases (114a, 114b, 114c, 114d, 114e); adapting at least one of the identified model and the identified model ensemble by utilizing the information corresponding to the subsystem; and utilizing at least one of the model and the model ensemble for controlling an operation of the subsystem; and utilizing the Distributed Control System to control the operation of the subsystem by controlling process parameters of the process in one or more subsystems of the plurality of subsystems (112a, 112b, 112c, 112d) based on said processing of the query. receiving a query at a human machine interface of the Distributed Control System, wherein the query is of a predetermined type and is associated with at least one of an operation and health of a subsystem of the plurality of subsystems (112a, 112b, 112c, 112d); identifying at a server of the Distributed Control System, a database of the plurality of databases (114a, 114b, 114c, 114d, 114e) comprising information corresponding to the subsystem, wherein the database is identified based on the query; processing the query at the server, based on the information corresponding to the subsystem available on the database, wherein processing the query comprises: identifying at least one of a model and a model ensemble based on the predetermined type of the query and the information corresponding to the subsystem, wherein at least one of the model and the model ensemble is identified from the said database or another database of the plurality of databases (114a, 114b, 114c, 114d, 114e); adapting at least one of the identified model and the identified model ensemble by utilizing the information corresponding to the subsystem; and utilizing at least one of the model and the model ensemble for controlling an operation of the subsystem; and identifying at least one of a model and a model ensemble based on the predetermined type of the query and the information corresponding to the subsystem, wherein at least one of the model and the model ensemble is identified from the said database or another database of the plurality of databases (114a, 114b, 114c, 114d, 114e); adapting at least one of the identified model and the identified model ensemble by utilizing the information corresponding to the subsystem; and utilizing at least one of the model and the model ensemble for controlling an operation of the subsystem; and utilizing the Distributed Control System to control the operation of the subsystem by controlling process parameters of the process in one or more subsystems of the plurality of subsystems (112a, 112b, 112c, 112d) based on said processing of the query.