1.Transactions:MYISAM doesnt support any database
transactions means if the transactions related to large
amount of data transfer it will not provide because memory
is less. But INNODB will provide transactions.
2.Locking:MYISAM provide the table level locking means if
the data in one table has been modified by the other
table ,the entire table will lock for the next process.But
INNODB provide the row level locking only the row of the
table that is being updated is locked.
3.Foreign keys – MYISAM tables do not support foreign keys.
4.Data Types:MYISAM provide a full variety of datatypes,but
INNODB will not.