erlang mnesia create table error -

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I am trying to create a table from Erlang Shell to the Menecia table. I got the error and the same error for the syntax copied from the Manisa help documents. 

  Manasseia: create_table (employee, [{attributes, record_info (field, employee)}]).   
 error occurred  
 
 record employee undefined   
 tried different combinations, the same error is happening in Manisa Has already started.   
 
 
 you  rd (employee, {emp_no, name, salary, gender, phone, room_no} ).  In the ARLing Shell  
 
 rd (Recondem, Record Definition) defines a record in the shell. RecordName is an atom and records the define field names and default values. Usually the record definitions are known for the shell using the RR commands described below, but sometimes it is easy to define the record on the fly.   
 Please refer to this link:

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