Subset a RelDataModel

Usage

# S3 method for RelDataModel
[(x, i, rmForeignKeys = FALSE, ...)

x: the RelDataModel objcet
i: the index or the names of the elements to extract
rmForeignKeys: if TRUE, remove foreign keys which are not available after extraction. If FALSE (default) the function will throw an error if any foreign keys does not exist in the extracted RelDataModel.
...: additional arguments for the RelDataModel function.