Whenever we talk about Big Data, one core topic is often not included: Data Quality. If we Data, all the Data doesn’t really help us if the data quality is poor. There are several key topics that data should contain in terms of quality.
Relevance – Data should contain a relevant subset of the reality to support the tasks within a company.
Correctness – Data should be very close to reality and correct.
Completeness – There should be no gap for data sets and data should be complete as possible.
Timeliness – Data should be up-to-date.
Accuracy – Data should be accurant to serve the needs of the enterprise.
Consistency – Data should be consistent.
Understandability – Data should be easy to interpret. If it is not possible, data should be explained by metadata.
Availability – Data should be available at any time.