I have an interesting problem with a database - this is a psudo-graph database where differing tables are linked together via a single, central link table. What i need is to try and identify from this central table all the graphs which do not contain specific objects types - I am basically after a subset of graphs based on objects that they link.
Below is the basic structure of the link table:
From Obejct Type | From Object Referece | To Obejct Type | To Object Referece | Date of Link Link Reason
Now the main kicker on this is that the link table holds several hundred million links already - I intially only need a proof of concept on this so can pull down a subset that proves the process works but am not sure where to start with this in KNIME.