Data quality plays an important role in information systems visual analysis
is an effective and efficient method of data quality evaluation. As most of
the existing researches of visual data quality analysis are aimed at specific
kinds of problems instead of an overall solution, we propose a relatively
complete solution for data quality analysis of relational database, including
the seldom researched normal form analysis. Then we built a set of
interactive visual forms and finally develop a toolkit DQvis to facilitate
data quality analysis.