CREATE TABLE table_12462 ("College or Campus Name" TEXT, "Location" TEXT, "District" TEXT, "Affiliation" TEXT, "Estd" FLOAT, "Weblink" TEXT)

In which district is anna university - tiruchirappalli campus, whose website is http://www.annauniv.edu, located?
SELECT "District" FROM table_12462 WHERE "Weblink" = 'http://www.annauniv.edu' AND "College or Campus Name" = 'anna university - tiruchirappalli campus'
SELECT "District" FROM "table_12462" WHERE "College or Campus Name" = 'anna university - tiruchirappalli campus' AND "Weblink" = 'http://www.annauniv.edu'