MYSQL space management

Finding Database size

SELECT table_schema "Data Base Name", SUM( data_length + index_length) / 1024 / 1024
"Data Base Size in MB"
FROM information_schema.TABLES
GROUP BY table_schema ;

Finding all table size in the database

SELECT table_name AS "Tables", round(((data_length + index_length) / 1024 / 1024), 2) "Size in MB"
FROM information_schema.TABLES
WHERE table_schema = "$DB_NAME"
ORDER BY (data_length + index_length) DESC;