The atomic number is the number of protons each atom has in its nucleus. By arranging the elements in this way, those with similar properties (characteristics) are grouped together. As with any grid, the periodic table has rows running left to right, and columns running up and down. The rows are called PERIODS and the columns are called GROUPS. Hydrogen (H) is the first element in the periodic table because it has just one proton in its nucleus. Helium (He) is second, because it has two protons, and so on.
The big picture. A software process is a structured set of activities required to develop a software system. Note that we are talking about a software process -- not a software development process..
Process models are processes of the same nature that are classified together into a model. Thus, a process model is a description of a process at the type level. Since the process model is at the type level, a process is an instantiation of it.The same process model is used repeatedly for the development of many applications and thus, has many instantiations.One possible use of a process model is to prescribe how things must/should/could be done in contrast to the process itself which is really what happens.A process model is roughly an anticipation of what the process will look like. What the process shall be will be determined during actual system development.ne possible use of a process model is to prescribe how things must/should/could be done in contrast to the process itself which is really what happens. A process model is roughly an anticipation of what the process will look like. What the process shall be will be determined during actual system development.