Users, managers, and auditors are required to participate in the project which generally provides approvals, often called signoffs, at pre-established management control points. Signoffs signify approval of the development process and the system being developed. The system must be tested thoroughly prior to implementation to ensure that it meets users’ needs. A training plan is developed for those who will operate and use the new system. A post-implementation review of all developed systems must be performed to assess the effectiveness and efficiency of the new system and of the development process. Different approaches Approach Framework Concept Traditional Linear Step by step Approach First module created with no controls etc - Then controls improved and first Prototyping Iterative module completed in totality - Then other modules Combination Here also we start with first module, which is a Prototype (Like in The Incremental of Linear Prototyping) - But within that module, all stages of SDLC are tested (Like in Model and Iterative Traditional approach) Combination Development is started with first two stages (Like in Traditional), but if it is Spiral Model of Linear felt going on next stages maybe risky, shift is made to Prototyping (Like in and Iterative Prototyping) Rapid Application Faster version of Prototyping where planning of software developed using Development Iterative RAD is interleaved with writing the software itself (RAD) Combination All stages of SDLC are followed up, and the project is delivered to the Agile of Linear customer. Then new subproject is developed and integrated in to the Methodologies and Iterative already delivered system. Traditional Approach/ Water Fall Approach/ Sequential Approach Introduction and definition Introduction and definition The waterfall approach is a traditional development approach in which activities are performed in sequence. When the traditional approach is applied, an activity is undertaken only when the prior step is fully completed. Framework type : Linear (Linear means relating to, or resembling a line, having only one dimension) Basic Principles Project is divided into sequential phases, with some overlap. Emphasis is on planning, time schedules, target dates, budgets and implementation of an entire system at one time. Tight control is maintained over the life of the project through the use of extensive written documentation, as well as through formal reviews and approval/signoff by the user and information technology management occurring at the end of most phases before beginning the next phase. Stage of System development life cycle
Users, managers, and auditors are required to participate in the project which generally provides approvals, often called signoffs, at pre-established management control points. Signoffs signify approval of the development process and the system being developed. The system must be tested thoroughly prior to implementation to ensure that it meets users’ needs. A training plan is developed for those who will operate and use the new system. A post-implementation review of all developed systems must be performed to assess the effectiveness and efficiency of the new system and of the development process. Different approaches Approach Framework Concept Traditional Approach Linear Step by step Prototyping Iterative First module created with no controls etc - Then controls improved and first module completed in totality - Then other modules The Incremental Model Combination of Linear and Iterative Here also we start with first module, which is a Prototype (Like in Prototyping) - But within that module, all stages of SDLC are tested (Like in Traditional approach) Spiral Model Combination of Linear and Iterative Development is started with first two stages (Like in Traditional), but if it is felt going on next stages maybe risky, shift is made to Prototyping (Like in Prototyping) Rapid Application Development (RAD) Iterative Faster version of Prototyping where planning of software developed using RAD is interleaved with writing the software itself Agile Methodologies Combination of Linear and Iterative All stages of SDLC are followed up, and the project is delivered to the customer. Then new subproject is developed and integrated in to the already delivered system. Traditional Approach/ Water Fall Approach/ Sequential Approach Introduction and definition Introduction and definition The waterfall approach is a traditional development approach in which activities are performed in sequence. When the traditional approach is applied, an activity is undertaken only when the prior step is fully completed. Framework type : Linear (Linear means relating to, or resembling a line, having only one dimension) Basic Principles Project is divided into sequential phases, with some overlap. Emphasis is on planning, time schedules, target dates, budgets and implementation of an entire system at one time. Tight control is maintained over the life of the project through the use of extensive written documentation, as well as through formal reviews and approval/signoff by the user and information technology management occurring at the end of most phases before beginning the next phase. Stage of System development life cycle
1311494623ISCA%20Notes.docx