Connection to database could not be established:

While testing of the server and created project, the cakephp is not able to connect to the database. I have modified the app.php file but no results. please help.

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Database

CakePHP is NOT able to connect to the database.
Connection to database could not be established: SQLSTATE[HY000] [1044] Access denied for user ‘’@‘localhost’ to database ‘sshsdb’

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you did not defined the sql username