Managing Information Resources

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Managing Information Resources
Manage Data Information Knowledge
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Managing Information Resources
The Problem with Data 1) Data in different
data bases do not match 2) Data have different
names 3) Data lack context 4) Data are
erroneous 5) Data used by multiple applications
but inconsistent
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Managing Information Resources
Data Administrator 1) Adjust data
definitions 2) Control data which are shared
among applications 3) Maintain data quality 4)
What is data quality? 5) What are the sources of
data errors? 6) What are some typical error
rates?
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Managing Information Resources
Data Dictionary 1) What is a data
dictionary? What does it do? Data dictionary
contains the definition of each piece of data.
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Managing Information Resources
Monsanto Example 1) Monsanto wanted to create
thrust, honesty, openness, initiative It
implemented SAP - which needs quality data 2)
Data warehousing 3) Knowledge management 4)
Data for DSS
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Managing Information Resources
Monsanto Example (contd) 1) Data Source -
Transactions performed by SAP 2) Data Warehouse
- Data from Internet external sources Has
Drill-down capability
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Managing Information Resources
Manage the Data 1) Applications use data
sub-schemes 2) Logical data base description use
schemes 3) Physical data base - has data pointers
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Managing Information Resources
Data Models 1) Hierarchical - parent/child 2)
Network - multiple parent/child 3) Relational -
Table Based 4) Object Orientation -
Documents Video Voice
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Managing Information Resources
Distributed Databases 1) Local autonomy 2) No
central site 3) Installations independent 4)
Users need not know data location 5) Data can be
distributed across installations
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Managing Information Resources
(Contd) 6) Distributed transaction
processing 7) Hardware Independent 8) Various
data bases are structure independent
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Managing Information Resources
Management Concerns 1) Data descriptions can
indicate its value 2) Data location - indicates
where it may be found 3) Document
descriptions 4) Manage groupware data to enhance
its value
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Managing Information Resources
Data Use 1) Who has access to what data 2)
Cultural change needed to have people use
data values attitude expectations
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Managing Information Resources
Information Types 1) Internal Data Record
versus Document Based 2) External Data Record
versus Document Based
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Public Databases
EDP
Record
Industry Internet
Word Processing
Document
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Managing Information Resources
How to Manage Knowledge 1) Formalize tactic
knowledge 2) Knowledge arise when people
interact as by using groupware 3) Need a
culture to drive knowledge sharing