Archiving data in database management systems

A computer-implemented method comprising:

• archiving at least a portion of data from a first processing system onto a second processing system;
• determining, via the first processing system, whether data satisfying a received query is the archived data or non-archived data;
• in response to the determined data being the archived data, transferring the received query from the first processing system to the second processing system to retrieve archived data satisfying the received query;
• in response to the determined data being non-archived data;
• determining, via the first processing system, eligibility of the received query for processing by the second processing system;
• processing the received query, via the first processing system, to retrieve non-archived data satisfying the received query in response to the received query being ineligible for processing by the second processing system;
• and
• transferring the received query from the first processing system to the second processing system to retrieve non-archived data satisfying the received query in response to the received query being eligible for processing by the second processing system.