Desc - Describe an Oracle Table, View, Synonym, package or Function

Desc - Describe an Oracle Table, View, Synonym, package or Function: "An alternative to the DESC command is selecting directly from the data dictionary - DESC MY_TABLE is equivalent to SELECT column_name 'Name', nullable 'Null?', concat(concat(concat(data_type,'('),data_length),')') 'Type' FROM user_tab_columns WHERE table_name='TABLE_NAME_TO_DESCRIBE';"