chapter 4: managing information resources with databases copyright © 2013 pearson education, inc....
TRANSCRIPT
Chapter 4:Managing Information Resources
with Databases
Copyright © 2013 Pearson Education, Inc. publishing as Prentice Hall Chapter 4 - 1
Learning objectives
1. Information resources
2. Database advantages
3. Relational database
4. Master data management
5. Data warehouse
6. Information management
Copyright © 2013 Pearson Education, Inc. publishing as Prentice Hall Chapter 4 - 2
YouTube
• Founded in 2005
• Goal to create worldwide community
• Database of videos
• Within one year, 100 million videos per day
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• Structured information
• Unstructured information
• Semi-structured information
• Metadata
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Information resources
• Accuracy
• Precision
• Completeness
• Consistency
• Timeliness
• Bias
• Duplication
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Quality of information
• Record• Field• Table
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Managing information
• Redundancy and inconsistency
• Lack of integration
• Inconsistent definitions
• Dependence
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File processing systems
• Reduced redundancy
• Integrity and accuracy
• Ability to adapt to changes
• Performance and scalability
• Security
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Databases
• One to one (1:1)
• One to many (1:M)
• Many to many (M:M)
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Database architecture
• Tables of records
• Link field in one
table to field in
another table
• Separates data from
paths to retrieve
data
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Relational database
• Entities and
attributes
• Primary key
• Normalization
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Data model (1:2)
• Relationships and foreign keys• Complex relationships
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Data model (2:2)
• Structured query language (SQL)
• Interactive voice response (IVR)
• Natural language interfaces
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Retrieving information
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Managing the database
• Performance tuning
and scalability
• Integrity, security,
and recovery
• Documentation
Multiple databases
• Integration
challenges
• Shadow systems
• Master data
management
• Data stewards
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Data warehouses
• Building data warehouses• Extract, transform, and load (ETL)• Data mining
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Human element
• Ownership issues
• Databases without boundaries
• Stakeholders
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Summary
1. Information resources
2. Database advantages
3. Relational database
4. Master data management
5. Data warehouse
6. Information management
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• Video surveillance
• Automatic plate
number recognition
• Database
• Queries and data
mining
• Privacy
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UK police case
Colgate Palmolive case
• $15 billion sales, 70 countries
• Consistency in products and data
• Colgate Business Planning (CBP)—profit,
loss and ROI by product, region, and retailer
• Reinvested $100 million in most profitable
promotions, goal $300 million
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Copyright © 2013 Pearson Education, Inc. publishing as Prentice Hall Chapter 4 - 21