I understand this is an extremely vague question. I will start by telling you what I have:
Every time I try to make a query table it gives me this error - 000152 : Invalid input data. I have added new fields, tried changing the .csv, and now I am out of Ideas.
I got it from the StatCan website and I'm using ArcMap
If I understand your question correctly, you just need to join the csv to the boundary shapefile.
You should use a table join.
Add both datasets to ArcGIS.
Open the attribute table of the dissemination area.
Add a join with the csv based on a common field (dissemination area name maybe?).
If you want the join to be permanent, you'll need to export the joined layer to a new shapefile or feature class OR use the tool 'Join Field' to join specific fields from your CSV to your shapefile.