Resource aware query planning

A system comprising:

• a memory;
• at least one processor in communication with the memory;
• and
• program instructions executable by one or more processor via the memory to perform a method comprising:
• receiving, by a database management system, a database query, wherein the database management system is in communication with a plurality of data sources including a first data source and a second data source, wherein the first data source includes a first database of a first database technology hosted on a first computing node, and wherein the second data source includes a second database of a second database technology hosted on a second computing node;
• generating a query execution plan in response to the receiving the database query, wherein the generating includes performing the generating in dependence on prediction data returned responsively to applying model prompting data to a trained predictive model trained using historical quantitative resource availability data to predict computing resource availability of the first computing node and the second computing node;
• and
• executing the database query in according with the query execution plan.