My problem is a software engineering problem , I would like to know the answer to the following study case but I want a level 0 dataflow diagram ( which is also called context diagram) but in detailed answer about its functionalities And the following study case begins as follows: 1. RESERVE SEATA passenger should be able to reserve a seat in the train specified by him if available. For this he has to fill a reservation form with the details about his journey. The clerk checks for the availability of the seat in the train and if the seat is available then he makes entries regarding train name, train number, date of journey, boarding station, and destination. The passenger is the asked to pay the fair .After making payment the passenger can collect the ticket from the clerk.2. CANCEL RESERVATIONThere may arise a case when the passenger wants to cancel his reservation .For this he has to fill a cancellation form providing all the details about the ticket reserved by him. The clerk then checks for the entries from the database and cancels the reservation finally returning the ticket amount with some deduction3. UPDATE TRAIN INFORMATION & REPORT GENERATIONOnly the Administrator has the right to make changes in train details(train name, train no. etc.).The system should also be able to generate report when needed in the form of reservation charts, train schedule charts etc.4. LOGINOnly the user with specified login id & password can get access to the system. This provides security from unauthorized access. 5. VIEW RESERVATION STATUS & TRAIN SCHEDULEAll the users should be able to see the information about the reservation status & train schedule, train name, train number etc. 22:31◄ FilesThis account does not allow editing on yourdevice. For an account with full access,... moreRESERVE SEATSoftware engineering2. CANCEL RESERVATIONSoftware engineeringSoftware has to be developed for automating the manual railway reservation system. The system shouldhave distributed functionalities as described below:Term study caseA passenger should be able to reserve a seat in the train specified by him if available. For this he has tofill a reservation form with the details about his journey. The clerk checks for the availability of the seatthe train and if the seat is available then he makes entries regarding train name, train number, date ofjourney, boarding station, and destination. The passenger is the asked to pay the fair .After makingpayment the passenger can collect the ticket from the clerk.4. LOGIN3. UPDATE TRAIN INFORMATION & REPORT GENERATIONThere may arise a case when the passenger wants to cancel his reservation For this he has to fill acancellation form providing all the details about the ticket reserved by him. The clerk then checks for theentries from the database and cancels the reservation finally returning the ticket amount with somededuction... - 65Only the Administrator has the right to make changes in train details (train name, train no. etc.). Thesystem should also be able to generate report when needed in the form of reservation charts, trainschedule charts etc.Mobile ViewOnly the user with specified login id & password can get access to the system. This provides securityfrom unauthorized access.5. VIEW RESERVATION STATUS & TRAIN SCHEDULEAll the users should be able to see the information about the reservation status & train schedule, trainname, train number etc.Sign inDiagramRead AloudHeadings

Question

My problem is a software engineering problem , I would like to know the answer to the following study case but I want a level 0 dataflow diagram ( which is also called context diagram) but in detailed answer about its  functionalities  And the following study case begins as follows: 1. RESERVE SEATA passenger should be able to reserve a seat in the train specified by him if available. For this he has to fill a reservation form with the details about his journey. The clerk checks for the availability of the seat in the train and if the seat is available then he makes entries regarding train name, train number, date of journey, boarding station, and destination. The passenger is the asked to pay the fair .After making payment the passenger can collect the ticket from the clerk.2. CANCEL RESERVATIONThere may arise a case when the passenger wants to cancel his reservation .For this he has to fill a cancellation form providing all the details about the ticket reserved by him. The clerk then checks for the entries from the database and cancels the reservation finally returning the ticket amount with some deduction3. UPDATE TRAIN INFORMATION & REPORT GENERATIONOnly the Administrator has the right to make changes in train details(train name, train no. etc.).The system should also be able to generate report when needed in the form of reservation charts, train schedule charts etc.4. LOGINOnly the user with specified login id & password can get access to the system. This provides security from unauthorized access. 5. VIEW RESERVATION STATUS & TRAIN SCHEDULEAll the users should be able to see the information about the reservation status & train schedule, train name, train number etc. 22:31◄ FilesThis account does not allow editing on yourdevice. For an account with full access,... moreRESERVE SEATSoftware engineering2. CANCEL RESERVATIONSoftware engineeringSoftware has to be developed for automating the manual railway reservation system. The system shouldhave distributed functionalities as described below:Term study caseA passenger should be able to reserve a seat in the train specified by him if available. For this he has tofill a reservation form with the details about his journey. The clerk checks for the availability of the seatthe train and if the seat is available then he makes entries regarding train name, train number, date ofjourney, boarding station, and destination. The passenger is the asked to pay the fair .After makingpayment the passenger can collect the ticket from the clerk.4. LOGIN3. UPDATE TRAIN INFORMATION & REPORT GENERATIONThere may arise a case when the passenger wants to cancel his reservation For this he has to fill acancellation form providing all the details about the ticket reserved by him. The clerk then checks for theentries from the database and cancels the reservation finally returning the ticket amount with somededuction... - 65Only the Administrator has the right to make changes in train details (train name, train no. etc.). Thesystem should also be able to generate report when needed in the form of reservation charts, trainschedule charts etc.Mobile ViewOnly the user with specified login id & password can get access to the system. This provides securityfrom unauthorized access.5. VIEW RESERVATION STATUS & TRAIN SCHEDULEAll the users should be able to see the information about the reservation status & train schedule, trainname, train number etc.Sign inDiagramRead AloudHeadings

Accepted Answer

DFD Level 0 is also called a Context Diagram.
It's a basic overview of the whole system or the…