Data: Data is processed by computers, the resulting information can then be used to make decisions. You need to know the definitions of data and information and the relationship between the two. Data is words, numbers, dates, images, sounds etc without context. http://www.bbc.co.uk/schools/gcsebitesize/ict/databases/0datainforev1.shtml
Une donnée est une information qui peut être enregistrée, traitée, analysée ou communiquée, quelle que soit sa nature. Lorsque la donnée n’a pas encore été traitée ou contextualisée, on parle de donnée brute.
Information: Data with context and meaning. http://www.bbc.co.uk/schools/gcsebitesize/ict/databases/0datainforev1.shtml
Information is a collection of words, numbers, dates, images, sounds etc put into context, ie to give them meaning.
Knowledge is the ability to understand information and to then form judgements, opinions, make predictions and decisions based on that understanding. http://www.bbc.co.uk/schools/gcsebitesize/ict/databases/0datainforev4.shtml
Quality: degree to which a set of inherent characteristics fulfils requirements [ISO 9000: 2005 E]
Requirement : need or expectation that is stated, generally implied or obligatory [ISO 9000: 2005 E]
Quality Data is data that meets stated requirements, Data that is portable [Benson]
standard ISO 8000 address data quality:
syntax (ISO 8000 110)
semantic encoding (ISO 8000 110)
data requirements (ISO 8000 110)
provenance (ISO 8000 120)
accuracy (ISO 8000 130)
completeness (ISO 8000 140)
Portable Data is independant of the software application, and can accessible by any application [Benson]
Reference data: identifiers
Characteristic data: descriptions
[Benson] Measuring Data quality using ISO 8000 from Peter R Benson