Which phase of the systems development life cycle (SDLC) includes writing code for the software?

The Development phase, also known as the Implementation or Construction phase, is the stage in the Systems Development Life Cycle (SDLC) where the theoretical work from the design phase is translated into a tangible, working system. During this phase, programmers and developers write the actual code based on the detailed design specifications, create databases, and build the software components. This is the core construction activity where the system is physically created.

A. Deployment: This phase occurs after development and testing; it involves releasing the finished software to the production environment for end-users.

B. Testing: This phase focuses on verifying and validating the software to find defects and ensure it meets requirements. It follows the development phase.

D. Design: This phase involves creating the architectural and detailed specifications (blueprints) for the system. No actual coding occurs during this stage.

1. Valacich

J. S.

& George

J. F. (2020). Modern Systems Analysis and Design (9th ed.). Pearson. In Chapter 1

the SDLC is outlined. The "Implementation" phase is defined as the stage where "the information system is coded

tested

installed

and supported." (p. 15

Figure 1-4).

2. MIT OpenCourseWare. (2005). 16.355J Software Engineering Concepts

Fall 2005. Lecture 2: Software Processes. The lecture notes describe the "Implementation and unit testing" phase

stating

"During this stage

the software design is realized as a set of programs or program units." (p. 10).

3. Pfleeger

S. L.

& Atlee

J. M. (2010). Software Engineering: Theory and Practice (4th ed.). Prentice Hall. Chapter 2

"Modeling the Process and Life Cycle

" describes the "Implementation" phase as the activity that includes creating the code. (p. 38).