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Chapter 2 • Foundations and Technologies for Decision Making 95

Internal Data Sources

Finance Marketing Production Personnel Other

External data
sources
Organizational Extraction Private,
knowledge base personal
data
Decision Corporate
Query support
facility data
database warehouse

Database
management Interface
system management
Retrieval Model
Data Inquiry management
directory Update
Report
generation Knowledge-based
Delete subsystem

figure 2.5 Structure of the Data Management Subsystem.

the Data Management subsystem

The data management subsystem includes a database that contains relevant data for
the situation and is managed by software called the database management system
(Dbms). The data management subsystem can be interconnected with the corporate
2
data warehouse, a repository for corporate relevant decision-making data. Usually, the
data are stored or accessed via a database Web server. The data management subsystem
is composed of the following elements:

• DSS database
• Database management system
• Data directory
• Query facility
These elements are shown schematically in Figure 2.5 (in the shaded area). The figure
also shows the interaction of the data management subsystem with the other parts of the
DSS, as well as its interaction with several data sources. Many of the BI or descriptive
analytics applications derive their strength from the data management side of the subsys-
tems. Application Case 2.2 provides an example of a DSS that focuses on data.

the Model Management subsystem

The model management subsystem is the component that includes financial, statistical,
management science, or other quantitative models that provide the system’s analytical
capabilities and appropriate software management. Modeling languages for building cus-
tom models are also included. This software is often called a model base management

2 DBMS is used as both singular and plural (system and systems), as are many other acronyms in this text.

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