Does we always have to first build catkin_workspace and then only build the catkin_package present in the src of catkin_workspace ?

Hi, I was reading ROS tutorials page on creating and building package in which I came across how to build the ROS packages. In the page it is shown that first the author has build the catkin workspace using catkin_make command and then he/her has build the beginner_tutorials package present in the src directory of the catkin_ws using the same command. So I want to know that whether we always I have to follow the above mention steps or we can directly build the catkin packages as shown in the tutorials inside the catkin_ws. Links:- http://wiki.ros.org/ROS/Tutorials/CreatingPackage http://wiki.ros.org/ROS/Tutorials/BuildingPackages