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_74113 ( "Team" text, "Outgoing manager" text, "Manner of departure" text, "Date of vacancy" text, "Replaced by" text, "Date of appointment" text, "Position in table" text )

### Question ###
how many teams had an appointment date of 11 april 2011

### Accurate SQL ###

SELECT COUNT("Team") FROM table_74113 WHERE "Date of appointment" = '11 April 2011'