Itâs not just the size of these pockets in skin cells that differs, but also the density of melanin packed within them. In black skin the melanin is packed so tightly that it absorbs and scatters more light, giving you more protection from the sunâs ultraviolet rays.
If a component of the team needs to be replaced, the new person can understand where the project is currently, easily. The Agile method on the other hand is an iterative and incremental approach to software development. In this form of SDLC small modules of the final products are released for the users to review and then are changed accordingly.
The Waterfall model is the earliest SDLC approach that was used for software development. The waterfall Model illustrates the software development process in a linear sequential flow. This means that any phase in the development process begins only if the previous phase is complete. In this waterfall model, the phases do not overlap. Waterfall Model - Design. Waterfall approach was first SDLC Model to be used widely in Software Engineering to ensure success of the project. In The Waterfall approach, the whole process of software development is divided into separate phases.