Software Development and Management

Every activity that happens after the deployment of the software's life: changes, correction, additions, software moving to a different computing platform and more. All are a part of the maintenance phase. This is often the longest of the stages.

In systems design, the design functions and operations are described in detail, including screen layouts, business rules, process diagrams and other documentation. The output of this stage will describe the new system as a collection of modules or subsystems.

The key characteristic of a spiral model is risk management at regular stages in the development cycle. This model combines some key aspects of the waterfall model and rapid prototyping methodologies.

Constructive Cost Model (COCOMO) is an algorithmic software cost estimation model developed by Barry W. Boehm. The model uses a basic regression formula with parameters that are derived from historical project data and current as well as future project characteristics.

Validation is the process of evaluating software during or at the end of the development process to determine whether it satisfies specified requirements.

PERT stands for Program Evaluation Review Technique. A PERT chart is a project management tool that is used to schedule, organise, and coordinate tasks within a project.

Functional cohesion is when parts of a module are grouped because they all contribute to a single well-defined task of the module. It is the most desirable type of cohesion.

A feasibility study is the evaluation and analysis of  potential of a proposed project, which is based on extensive investigation and research to support the process of decision making. It is the first phase of Software Development Life Cycle (SDLC).

The Constructive Cost Model (COCOMO Model) is an algorithmic model used for software cost estimation. 

A Nassi–Shneiderman diagram (NSD) in computer programming is a graphical design representation for structured programming and N-S). Diagrams are structured flow charts drawn as boxes-within-boxes. N-S diagrams.

It incorporates prototyping as a risk reduction strategy.

By this software, it is frequently important to obtain a swift view on the acceptability of the proposals from a group perspective before proceeding.

It is a set of practices originally developed by Motorola to systematically improve processes by eliminating defects.

It is the set of engineering activities that consumes the products and artifacts derived from legacy software and new requirements to produce a new target system.

This approach permits managers at all levels to influence the design of the information system.