The most important phase in the SDLC process is to determine system requirements. If the requirements are wrong, the system will be wrong. SIX activities occur in this phase as the diagram shows. Users are a critical part of this phase. They must approve the requirements before moving to the next phase.
At this stage the system analyst must come up with the detailed requirements for the new system. Some of these requirement specifications include:
1. Output Specifications
These are the expected results from our proposed system.
The following factors should be considered when designing the output;
2. Input Specifications
We need to identify the input needed to obtain the relevant information from the system.
3. •File/Data Stores
This involves making informed decisions on files required to store data and information in the system. The attributes of the records in a file should also be identified. An attribute is a unique characteristic of a record for which a data value can be stored in the system database.
Factors to consider when designing a file:
4. Hardware and Software Requirements
The system analyst should specify all hardware and software requirements for the new system. Some of the factors to consider in hardware and software specification are:
Flowcharts use special shapes to represent different types of actions or steps in a process. Below are some of the shapes most commonly used;
Guidelines for drawing a system Flowchart
Stage 5: System Construction
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