bit session 9 d.punia
TRANSCRIPT
8/3/2019 BIT Session 9 d.punia
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Basics of IT & MIS
Session 9
Dr. Devendra Kumar [email protected]
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Bank of Baroda ± enterprise data management
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File organization
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File organization
Problems with the traditional file environment
Data redundancy and inconsistency
Program-data dependence
Lack of flexibility
Poor security
Lack of data sharing and availability
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Database management systems
How a DBMS solves the problems of the traditional file
environment
Database Approach to Data Management
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Figure 6-3
A single human
resources database
provides many
different views of
data, depending on
the information
requirements of the
user. Illustrated here
are two possible
views, one of interestto a benefits
specialist and one of
interest to a member
of the company¶s
payroll department.
Human Resources Database with Multiple ViewsHuman Resources Database with Multiple Views
Database Approach to Data Management
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Database management systems
Relational DBMS
Operations of a relational DBMS
Object-oriented DBMS
Database Approach to Data Management
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Capabilities of database management systems
Data definition and data dictionary
Querying and reporting
Designing databases
Normalization and entity-relationship diagrams
Distributing databases
Database Approach to Data Management
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Distributed DatabasesDistributed Databases Figure 6-12
There are alternative ways of distributing a database. The central database can be partitioned (a) so that each
remote processor has the necessary data to serve its own local needs. The central database also can be
replicated (b) at all remote locations.
Database Approach to Data Management
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Database warehouses
What is a data warehouse?
Data marts
Using Databases in Business
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Components of a Data WarehouseComponents of a Data Warehouse Figure 6-13
The datawarehouse
extracts current
and historical data
from multiple
operational
systems inside the
organization.
These data arecombined with
data from external
sources and
reorganized into a
central database
designed for
management
reporting and
analysis. The
information
directory provides
users with
information about
the data available
in the warehouse.
Using Databases in Business
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Business intelligence
Using Databases in Business
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Online analytical processing (OLAP)
Data mining
Associations
In sequence
Classification
Clustering
Forecasting
Predictive analysis
Text Mining and Web Mining
Databases and the Web
Using Databases in Business
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Databases and the Web
Using Databases in Business
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Managing Data Resources
Establishing and information policy
Data administration / governance
Ensuring data quality
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Thanks