The application programmer uses these fields to read and write data into the map.įor an unprotected named field, in a map, if we have specified a length of 10, this means that the name field can take values whose length cannot exceed 10. It contains all the variable data which is copied into program's WORKINGSTORAGE section. The Copy book is used by the CICS application program to send and receive data from the terminal. It is assembled separately and link edited into the CICS library.Ī Symbolic Map is a Copy book in the library. It contains the display format of the map for a given terminal. It contains the details about the attributes of all the fields in the map and their positions. Physical Map is a load module in the load library which contains information about how the map should be displayed. BMS will merge the output of the symbolic data with the physical map. The application program processes the data and the output is sent to the symbolic map. The application program has access only to the data present in the symbolic map. BMS receives the data entered by the user and then formats it into a symbolic map area.
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