Bedarfsanalyse fachlicher Metadaten - Universität St.Gallen

88 Beitrag C.2
Data security management comprises activities to develop and execute security policies
in order to meet internal and regulatory requirements [DAMA 2009; Whitman,
Mattord 2007]. Thereby audit metadata increases the transparency on compliance and
ensures the traceability of compliance issues through audit logs [Shankaranarayanan,
Even 2004; Shankaranarayanan, Even 2006]. Overall, transparency and traceability on
compliance reduces regulatory fines by proactively managing privacy protection and
confidentiality.
10.3.2 Extraction of Information from BI-Systems
Within systems theory information is defined as data within a certain context, whereas
data itself has no meaning beyond pure existence [Ackoff 1989]. BM describes the
context of data by providing additional information (e.g., definitions and applied transformation
rules). Therefore, the benefits of BM in the context of information extraction
are closely related to the usage dimensions of data quality: ease of understanding,
interpretability, believability, and accessibility [Wand, Wang 1996; Wang, Strong
1996].
Ease of understanding evaluates to which extend information is clear, readable, and
easily understood. Hereby, definitional metadata can be used to enforce a unique terminology
and communication language within the enterprise by eliminating terminological
defects [Hüner, Otto 2009; Stock, Gubler 2009; Vaduva, Vetterli 2001]. Ease
of understanding, therefore, increases the acceptance and usage of BI-Systems [Foshay
2005; Foshay, Mukherjee, Taylor 2007] and/or results in less need for first-level support.
From an information producer perspective, a unique terminology also increases
the data quality by fostering a consistent data entry.
Interpretability evaluates to which extend information is interpretable in the light of
individual belief, judgment, and circumstances. Especially definitional and quality metadata
is necessary to assess the information’s fit for use [Chengalur-Smith, Ballou,
Pazer 1999; Fisher, Chengalur-Smith, Ballou 2003]. In addition, annotations are a
means of pointing out recent events through structured comments. From an information
producer perspective, annotations also increase the flexibility during information
entry. Better interpretability results in better decision making [Chengalur-Smith, Ballou,
Pazer 1999; Fisher, Chengalur-Smith, Ballou 2003].
Believability evaluates to which degree the information is trustworthy. Since BI-
Systems are often regarded as black boxes, process and quality metadata helps to increase
transparency on the information value chain [Even, Shankaranarayanan, Watts