Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_18 ( format VARCHAR, date VARCHAR, catalog VARCHAR )

### Question ###
In what format was the release that was dated 7 April 2003 from catalog 584 2112?

### Accurate SQL ###

SELECT format FROM table_name_18 WHERE date = "7 april 2003" AND catalog = "584 2112"