business intelligence technologies (1)

7/21/2019 Business Intelligence Technologies (1)

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Business Intelligence Technologies

Donato MalerbaDipartimento di Informatica

Universit degli Studi, Bari, Italy

[email protected]

http:!!!.di.uniba.it"malerba


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Business Intelligence

Business Intelligence is a global term

for all the processes, techniques and

tools that support business decision-

making based on informationtechnology.

The approaches can range from a

simple spreadsheet to a major

competitive undertaking. ata mining is an important ne!

component of business undertaking.


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Business Intelligence Technologies

Data Sources

Paper, Files, Information Providers, Database Systems, OLTP

Data #arehouses Data $arts

Data %&ploration

OLAP, DSS, EIS, Querying and eporting

Data $ining

Information dis!overy

Data 'resentation

"isuali#ation Te!$ni%ues

Decision

$a(ing

Increasing potentialto support

business decisions

End User

Business

"nalyst

ata

"nalyst

B

"dmin


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Business Processes ata for support decision making

decisional

processes)agreement !ith a credit card*

managementprocesses

)grant a loan*

operational

processes

)transaction on

ban( account

)%&.: Ban(ing*

DSS o %IS

$IS

+'S

ifferent information systems support thedifferent processes


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DSS vs. EIS ecision #upport #ystems $##% and

&'ecutive Information #ystems $&I#%(

information systems designed to help

managers in making choices.

ifferent, yet interrelated applications " ## focuses on a particular decision,

!hereas an &I# provides a much !ider

range of information $e.g., information on

financials, on production history, and on

e'ternal events%.

##s appeared in the )*+s

&I#s appeared in the )*s.


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DSS vs. EIS The original &I#s did not have the

analytical capabilities of a ##

"n &I# is used by senior managers to

find problems/ the ## is used by the

staff people to study them and to offeralternatives0 $1ockart and elong, )*%

%IS DSS


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Where do Data Come From? The &I#s and ##s often lacked a strong

database component.

2ost organi3ational information gathering

!as $and is% directed to maintaining

current $preferably on-line% informationabout individual transactions and

customers.

2anagerial decision making requires

consideration of the past and the future,not just the present.

4e! databases, called data &are$ouses,

!ere created specifically for analytic use


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A Data Warehouse is ...

" data !arehouse is a subect-oriented,

integrated,

time-variant, and

nonvolatile

collection of data in support of management5sdecisions

Inmon, #..Building the Data Warehouse#ellesley, $/: 0%D +ech. 'ub. 1roup,2334


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su!ect"oriented ...

The data in the !arehouse is definedand organi3ed in business terms, and is

grouped under business'orientedsub(e!t $eadings, such as

customers

products

sales

rather than individual transactions.

)ormali#ationis not relevant.


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integrated ... The data !arehouse contents are defined such that

they are valid across the enterprise and its operationaland e'ternal data sources

5perational systems

Data !arehouse

The data in the !arehouse should be clean

validated

properly integrated


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time"variant ...

"ll data in the data !arehouse is time-

stamped at time of entry into the

!arehouse or !hen it is summari3ed

!ithin the !arehouse. This chronological recording of data

provides historical and trend analysis

possibilities.

6n the contrary, operational data is

over!ritten, since past values are not of

interests.


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nonvolatile ...

6nce loaded into the data !arehouse, the

data is not updated.

ata acts as a stable resource for

consistent reporting and comparativeanalysis.

6n the contrary, operational data is

updated $inserted, deleted, modified%.


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Which Data in the Warehouse?

" data !arehouse contains five types ofdata(

6urrent detail data

5ld detail data

7ightly summari8ed data

ighly summari8ed data

$etadata

*ranularityof the data( a key designissue


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Flo# o$ Data

5perational

%nvironment

6lean thedata

9eside in

!arehouse

'urge

Summari8e

/rchive


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An E%am&le o$ Data Integration

6hec(ing /ccount System

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6hec(ing /ccount System

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Savings /ccount System

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