Dear BioMart users, I'm dealing with BioMart to annotate a local database by importing several attributes from the Ensembl mart (homo sapiens). Now I've created a configuration for the Ensembl source and imported the local attributes to it.
The general point is that we would like to retrieve all the data stored in the local database plus other attributes from different sources like Ensembl in case they exist, in case not we would like to still retrieve the local data and getting "no data" in those Ensembl attributes that do not exist for the selected local attributes. Is this possible? The issue is that when I query only the local attributes (in this case the "affy id" attribute) the results only contain those "affy ids" that are also present on Ensembl. I would agree with this result if I would have included in the query attributes from the Ensembl mart but this is not the case. Then the question is the following: Is BioMart by default making the intersection between the two sources when creating a link between them? Is there a way to get the union instead of the intersection? Thanks in advance, -- Isaac Cano Bioinformatics Linkcare Health Services SL C/Villarroel 170 08036 - Barcelona Tel.: (+34)932 275 400, ext. 4182\4523 Mobile: (+34) 666 186 748 Fax: (+34) 932 275 455 [email protected]
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