Does biomart require that all rows from a main table have a corresponding row in a dm table (either with real values or all NULL values) for proper function?
For example, if we are storing PFAM domains for transcripts, where transcripts are stored in say transcripts__main and PFAM domains in pfam__dm, do transcripts that do NOT have any PFAM domain need to have a row in pfam__dm with all columns set to NULL? In our mart, we are seeing that if attributes are selected from transcripts__main and from different dm tables, only those transcript that have rows in ALL selected dm tables are displayed onthe results page. Thanks, rochak
