Information Systems Development

This chapter focuses on the concepts surrounding the development of information systems. It begins with a discussion of software development methodologies, then covers programming languages and tools, and finishes with a review of implementation methodologies. As you read, reflect upon all the different pieces that must come together in order for a system to be developed.

Agile and Iterative Development

The diagram above emphasizes iterations in the center of agile development. You should notice how the building blocks of the developing system move from left to right, a block at a time, not the entire project. Blocks that are not acceptable are returned through feedback and the developers make the needed modifications. Finally, notice the Daily Review at the top of the diagram. Agile Development means constant evaluation by both developers and customers (notice the term "Collaboration") of each day’s work.

The characteristics of agile methodology include:

  • Small cross-functional teams that include development team members and users;
  • Daily status meetings to discuss the current state of the project;
  • Short time-frame increments (from days to one or two weeks) for each change to be completed; and
  • Working project at the end of each iteration which demonstrates progress to the stakeholders.

The goal of agile methodologies is to provide the flexibility of an iterative approach while ensuring a quality product.