CREATE TABLE table_204_779 (id DECIMAL, "network name" TEXT, "flagship" TEXT, "programming type" TEXT, "owner" TEXT, "affiliates" DECIMAL)

how many networks does tv azteca own ?
SELECT COUNT("network name") FROM table_204_779 WHERE "owner" = 'tv azteca'
SELECT COUNT("network name") FROM "table_204_779" WHERE "owner" = 'tv azteca'