The Data Administration provides a set of DataServer utilities that you can use to maintain a schema holder.
The DataServerTutorial describes these utilities.
If you make changes to a MS SQL Server database, make sure to update the associated schema holder to reflect those changes if you want them to be accessible to a DataServer application. Note that you do not need to update the schema holder if the application will never access data objects affected by the change. For example, if you add a table object that a DataServer application will never access, you do not need to update the schema holder.
Each time that you update the schema holder, you must recompile your DataServer application (.p and .w files) to generate new r-code.