November 2001
Intermediate to advanced
158 pages
5h 10m
English
Content preview from IBM ESS and IBM DB2 UDB Working Together
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Chapter 3. Configuration for performance and manageability 31
OLTP systems process the day-to-day operational data of a business and, therefore, have
strict user response and availability requirements. They also have very high throughput
requirements and are characterized by large amounts of database inserts and updates. They
typically serve hundreds, if not thousands, of concurrent users, which can severely impact
system performance.
Decision Support Systems (DSS)
DSS differ from the typical transaction-oriented systems in that they most often consist of
data extracted from multiple source systems for the purpose of supporting end-user:
Data analysis applications using pre-defined queries
Application generated queries
Ad-hoc user quer
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