The traditional model, also called the waterfall model Soft systems methodology Hard systems methodology Agile methodology Hybrid methodology Prototyping Object Oriented Approach RAD
Quasi-Experimental Designs fair better than pre-experimental studies in that they employ a means to compare groups, but lacks the key ingredient --- random assignment.
Research methodology is where you describe the how you gonna gather information( methods) this can be survey interview , litterateur review etc. And then you explain each method what are they , what...