docs: def get_database_rows(self, tables=None, database=None):
          """Retrieve a dictionary of table keys and list of rows values for every table."""
          # Get table data and columns from source database
          source = database if database else self.database
          tables = tables if tables else self.tables
  
          # Get database select queries
          commands = self._get_select_commands(source, tables)
  
          # Execute select commands
          return self._execute_select_commands(source, commands)