CREATE TABLE medicine (id DECIMAL, name TEXT, trade_name TEXT, fda_approved TEXT)
CREATE TABLE medicine_enzyme_interaction (enzyme_id DECIMAL, medicine_id DECIMAL, interaction_type TEXT)
CREATE TABLE enzyme (id DECIMAL, name TEXT, location TEXT, product TEXT, chromosome TEXT, omim DECIMAL, porphyria TEXT)

What are the most common types of interactions between enzymes and medicine, and how many types are there?
SELECT interaction_type, COUNT(*) FROM medicine_enzyme_interaction GROUP BY interaction_type ORDER BY COUNT(*) DESC LIMIT 1
SELECT "interaction_type", COUNT(*) FROM "medicine_enzyme_interaction" GROUP BY "interaction_type" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1