CREATE TABLE author (aid INT, homepage VARCHAR, name VARCHAR, oid INT)
CREATE TABLE domain_journal (did INT, jid INT)
CREATE TABLE organization (continent VARCHAR, homepage VARCHAR, name VARCHAR, oid INT)
CREATE TABLE journal (homepage VARCHAR, jid INT, name VARCHAR)
CREATE TABLE cite (cited INT, citing INT)
CREATE TABLE publication_keyword (kid INT, pid INT)
CREATE TABLE publication (abstract VARCHAR, cid INT, citation_num INT, jid INT, pid INT, reference_num INT, title VARCHAR, year INT)
CREATE TABLE domain_publication (did INT, pid INT)
CREATE TABLE domain_conference (cid INT, did INT)
CREATE TABLE writes (aid INT, pid INT)
CREATE TABLE conference (cid INT, homepage VARCHAR, name VARCHAR)
CREATE TABLE domain_keyword (did INT, kid INT)
CREATE TABLE domain_author (aid INT, did INT)
CREATE TABLE keyword (keyword VARCHAR, kid INT)
CREATE TABLE domain (did INT, name VARCHAR)

return me the paper after 2000 in Databases area with the most citations .
SELECT publication.title FROM domain, domain_publication, publication WHERE domain.did = domain_publication.did AND domain.name = 'Databases' AND publication.pid = domain_publication.pid AND publication.year > 2000 ORDER BY publication.citation_num DESC LIMIT 1
SELECT "publication"."title" FROM "domain" JOIN "domain_publication" ON "domain"."did" = "domain_publication"."did" JOIN "publication" ON "domain_publication"."pid" = "publication"."pid" AND "publication"."year" > 2000 WHERE "domain"."name" = 'Databases' ORDER BY "publication"."citation_num" DESC NULLS LAST LIMIT 1