Page 215 - DCAP302_ENTERPRISE_RESOURCE_PLANNING

Unit 12: Building and Deploying an Information System

2. Regression testing which revalidates previously proven capabilities to assure their notes
continued integrity when other components are modified.
3. Location based testing covers
(a) Pre shipment (Alpha) by developer / user on the development environment
(b) Post shipment (Beta) by user on the production environment
4. Exception testing which detects File errors, I/O errors, locking problems

5. Selective testing which would cover complex, error- prone, critical functions
6. Cross Platform Testing
7. Environment based - Parallel Run to simulate the live situation and compare results.
Testing should not be planned under the assumption that no errors will be found. Test items
should cover invalid & unexpected input conditions as well as valid conditions.
The Test plan should identify the following:
1. Resources required
2. Tasks & Deliverables

3. Schedule
4. Features to be tested
5. Test items
6. Risks

The test plan has to be documented and reviewed so as to confirm the feasibility and completeness
of the testing.

Task Discuss data flow diagram. How will you design an DFD of an application.

12.6 Deploying an information system

Effective planning of investments in IT by business unit managers is a key ingredient in achieving
strategic business success with IT. Planning is deciding what to do before you do it and is an
important factor of success. The process of organizational planning consists of
1. Team building, modeling and consensus

2. Evaluating what has been accomplished and the resources acquired
3. Analyzing the business, economic, political and societal environment
4. Anticipating and evaluating the impact of future developments and opportunities
5. Building a shared vision and deciding a goal to be achieved
6. Identifying and action plan to achieve this goal
Information System planning is an important components of organizational planning. Strategic
planning has four main objectives to be considered.
1. Business alignment: Aligning investment in IT with the organisation’s business vision and
strategic business rules.

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