a query on a table with a self-join
a query that calls itself
A query made to a DNS server in which the requester asks the server to assume the full workload and responsibility for providing a complete answer to the query. The DNS server then uses separate iterative queries to other DNS servers on behalf of the requester to assist in completing an answer for the recursive query. See also iteration; iterative query; recursion.
A DNS query where the name server asks other DNS server for any nonauthoritative data not in its own cache. Recursive queries continue to query all name servers until receiving an answer or an error.