Writing the Genero BDL report program A Genero BDL report program retrieves the data and outputs it to a report. OverviewGenero BDL is used to write the code for a 4gl file that retrieves the data, often from a database, and outputs it to a report. TipsTips for writing a BDL report program.Creating a simple reportThis topic uses a demonstration to illustrate the steps for creating a simple report.Fetching report dataYou can obtain the data for the report in several ways.Output optionsVarious output formats are available for a report, to include SVG, PDF, and image files. The output is sent to the destination specified by the output options.Generate a data schema from a Genero BDL report programAfter you write or modify a Genero report program, you must generate the data schema. This file is used by the Genero Report Designer to provide a list of data objects for use in the report design.Allowing the user to select output optionsUsers can choose the format to see the report output.Creating a report with dummy dataIf your report does not contain data, you receive an error message. You can use a workaround to ensure your report always has at least one line of data and therefore avoid this error.