| Data
Warehouses, Decision Support and Data Mining |
A Data
Warehouse is a subject-oriented,integrated,time-variant,non-volatile collection
of data used in support of management decision making processes. Subject-Oriented:-
The data warehouse is organized around the key subjects (or high-level entities)
of the enterprise. Major subjects
include
a) Customers
b) Patients
c) Students
d) Products
e)
Etc. Data support :- Stored
collection of diverse data
A solution to data integration problem
Single
repository of information
Subject-oriented
Organized by subject, not by
application
Used for analysis, data mining, etc.
Optimized differently
from transaction-oriented db
User interface aimed at executive decision makers
and analysts. Data mining :- It
is an attempt to find patterns and relationships hidden in data.
Data mining
tools use data to build a model of the real world. The result of this modeling
is a description of patterns and relationships in data.
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