You can create a database definition (.dbm file) from scratch. A database definition is required to create database mappings.
You must have a database definition (.dbm file) contained in a data design project before you can create database mappings. You can also use database definitions in other nodes, such as the Compute node, to validate references to database sources and tables. You must include a data design project in an application, or reference it from an Integration project, before you can use the database definitions that your data design project contains.
Database definition files in the IBM® Integration Toolkit are not automatically updated. If you modify your database, you must re-create the database definition files.
Complete the following steps to create a database definition (.dbm file) from scratch: