After presenting
basic data quality concepts we introduce DSS-METRIQ and explain each phase
of the methodology in detail. We conclude with a discussion on possible research
directions.
Related.Work
The software development cycle involves different stages or phases, each one of them
composed of a set of activities. The final goal is obtaining a software product reflecting
user requirements in the best possible way. Waterfall and Baseline Management
are popular models for software development. There are five phases in these models:
requirements analysis, design, coding, testing, and system integration, in sequential
form. Modeling through prototypes consists in quickly developing a system for
helping to determine software requirements. Another popular technique, the Spiral
model emphasizes the idea that requirements cannot be determined in a precise way
from the start, leading to the idea of a ???spiral??? which includes a complete cycle that
must be revised iteratively until the final system satisfies the expected functionality.
In all of these models, the requirements analysis phase is divided into four main activities:
requirement elicitation, analysis and modeling, specification, and validation.
During requirements elicitation, requirement engineers gain understanding of the
user needs. A requirements engineer carries out interviews, classifies and integrates
the information obtained.
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