SELECT home_conference FROM University GROUP BY home_conference HAVING avg(enrollment)  >  2000
Show all home conferences with average enrollment of universities above 2000.
CREATE TABLE "university" (
"University_ID" int,
"University_Name" text,
"City" text,
"State" text,
"Team_Name" text,
"Affiliation" text,
"Enrollment" int,
"Home_Conference" text,
PRIMARY KEY ("University_ID")
);
CREATE TABLE "overall_ranking" (
"Rank" int,
"University_ID" int,
"Reputation_point" int,
"Research_point" int,
"Citation_point" int,
"Total" int,
PRIMARY KEY ("University_ID"),
FOREIGN KEY (`University_ID`) REFERENCES `university`(`University_ID`)
);
CREATE TABLE "major" (
"Major_ID" int,
"Major_Name" text,
"Major_Code" int,
PRIMARY KEY ("Major_ID")
);
CREATE TABLE "major_ranking" (
"Rank" int,
"University_ID" int,
"Major_ID" int,
PRIMARY KEY ("Rank","Major_ID","University_ID"),
FOREIGN KEY (`University_ID`) REFERENCES `university`(`University_ID`),
FOREIGN KEY (`Major_ID`) REFERENCES `major`(`Major_ID`)
);
INSERT INTO  "university" VALUES (1,"Augustana College","Rock Island","Illinois","Vikings","Private_Lutheran","2500","CCIW");
INSERT INTO  "overall_ranking" VALUES ("1",1,"5","2","0","7");
INSERT INTO  "major" VALUES (1,"Accounting",1054);
INSERT INTO  "major_ranking" VALUES (1,1,1);