Importance

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Abstract

To provide an interface between a computer application and a database, a user invokes the application and another program, called 'link manager'. The user 'drags and drops' GUI objects from the application window to the link manager window to command the link manager to associate parameters of the GUI objects (e.g., object names) with input and output fields of database operations. The link manager records these associations in a mapping file. When later the application is executed, a program, called 'execution manager', reads the mapping file. When the application issues a request to the database, the execution manager uses the mapping file to translate the request to the database format, converting values of parameters of GUI objects to input values of a database operation as defined by the mapping file. The execution manager translates the database response to the application format, converting output values of the response to values of application GUI parameters as defined by the mapping file.

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