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8/8/2019 Enterprise Wide Data Warehousing With SAP BW
1/38
Ent erpr ise Wide Dat aWarehousing w i t h SAP BW
SAP NetWeaver Regional Implementation Group -BISAP AG
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 2
Content
Enterprise Wide BWEnterprise Wide BW -- BackgroundBackground
Elements of a Corporate BW StrategyElements of a Corporate BW Strategy
The BW Data Model Prevents SilosThe BW Data Model Prevents Silos
BW Data Layers Guarantee Reliability and FlexibilityBW Data Layers Guarantee Reliability and Flexibility
BW Corporate Landscape PatternsBW Corporate Landscape Patterns
Content
8/8/2019 Enterprise Wide Data Warehousing With SAP BW
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8/8/2019 Enterprise Wide Data Warehousing With SAP BW
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Ent erpr ise Perspec t ive on BW
Enterprise perspective on BW:
Higher level organizational units want
to harmonize the lower level BW initiatives
Architecture-based BW implementation
from the very beginning Stabilize a mature BW landscape
(Overhaul the architecture)
GroupGroup
Division ADivision A
Division BDivision B
Division CDivision C
Division DDivision D
............ RetailRetailBusiness
MarketingBusinessMarketing ..............
EuropeEurope
AmericasAmericas
Asia/
PacificAsia/
Pacific
GermanyGermany
SpainSpain
UKUK
FranceFrance
NordicNordic
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Mul t ip le BW Im plement a t ions Cha llenges
Source
Source
Source
Source
Source
Source
Source Source
Local
BW
LocalBW
Source
Source
SourceLocal
BW
Unit 2BW
Successful Data Warehousing means: controlled redundancy !
Local
BW
Local
BW
Stream BBW
Stream CBW
Group
BW Stream ABW
Unit 1BW
Consistency issues:
Uncontrolled data flows
Multiple extractions of same data
Costly development
Not aligned data models
Danger of high level Silos
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Loc a l BW Im plement a t ion Cha l lenges
.... Real WorldInformationrequirementsSchema-Modeling
Data Marts-InfoCubes
Extraction
Sources
Business Rules
Transformation
B
WProjectTe
am
Observat ions: Incremental set up
Solution-Focus (Data Marts)
Departmental view
Project is responsiblefor the entireData Warehouse Process
Pot ent ia l c onsequenc es:
Departmental islands (silos)
Consistency problems Completeness not sufficient
Flexibility restricted
Trace back not possible
Successful Data Warehousing means: controlled redundancy !
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Corporat e Dat a Warehousing St rat egy
Missing corporate strategy and guidelinesPotential consequences: Silo solutions Doubtful reliability
Restricted flexibility High costs
Means: Uncontrolled Redundancy
Limited Solution Focus
Prerequisites to set up a proper strategy: Awareness
about accepted data warehousing concepts and their benefits
Support of corporate management (Sponsorship)
If there is no organizational momentum toward a common goal, then the bestarchitecture, the best framework in the world is bound to fail.
W.H. Inmon
Who needs a Corporat e BW St rat egy?
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Who needs a Corporat e BW St rat egy?Al l , bu t t he prerequ is i t es are d i f fe rent !
Group
Stream A Stream B Stream C Stream D
...... RetailBusiness
Marketing......
Regions/ countries
Headquarter
Region A Region B Region C
countries
Architecture-,
SAP-based,single Instance
Legacy R/3
Legacy R/3
Legacy
Legacy
Legacy
Organization,Business
OLTP landscape
Necessity of a corporate BW Strategy
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Content
Enterprise Wide BWEnterprise Wide BW -- BackgroundBackground
Elements of a Corporate BW StrategyElements of a Corporate BW Strategy
The BW Data Model Prevents SilosThe BW Data Model Prevents Silos
BW Data Layers Guarantee Reliability and FlexibilityBW Data Layers Guarantee Reliability and Flexibility
BW Corporate Landscape PatternsBW Corporate Landscape Patterns
Content
8/8/2019 Enterprise Wide Data Warehousing With SAP BW
10/38 SAP AG 2004, Enterprise Wide BW, J. Haupt / 10
Elem ent s of a Corporat e BW St rat egy
BW Enterprise Data Warehousing
Decision Areas
ArchitectureApplicationDevelopment
IntegrationStrategySupport
Data Layer Data Model Landscape
Tactical/Strategic
Decision-Making
OperationalDecision-Making
Think o f : Bu i ld ing a Corpora te In form at ion Fac t ory *- Avoid Si los
*The Corporate Information Factory: introduced by Inmon, Imhoff
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The Role of a Consist ent Dat a Warehouse Dat a Model
Consistent Data Warehouse
Data Model
long term success
A challenge forData Warehouse
consistency
MaterialManagement
OLTP
SalesOLTP
Consistent corporate Data Model
?
HROLTP
Not aligned operationalData Models
Inconsistent Data Warehouse Data Models
Island-solutions (silos, stovepipes)
?
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 12
The BW Dat a Warehouse Dat a Model
BW of fers as par t o f t heBusiness Cont ent
a predef ined ex pandable
Dat a Warehouse Data Model
BW Data Warehouse DataModel for SAP und other
applications(InfoObjects & InfoSources)
SAP Corporate
Data Model
Legacy
Data Models
Consistent mapping of operative
data models For all SAP applications For SAP industrial solutions
(e.g. Retail, Utilities..)
For non SAP application Ascential Partnership Siebel, Oracle ....
BW Ex t ended St ar Sc hem a
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 13
BW Ex t ended St ar Sc hem abui l t on t he BW Dat a Model
BW Extended Star Schemas
built on BW Data Model
0SALESPERS0SALESORG.....
0CUSTOMER00CUSTGR......
0MATERIAL
0MATGR0MATTYPE......
BW InfoObject Master Data:
0CUSTOMER0MATERIAL0AMOUNT
BW InfoCube:
Customer Material Sales Person
Sales
Transaction
Materialgroup SalesORG
MaterialType
Corporate Data Model:SAP Components
Shared/ ConformedDimensions
scope-specific
BCT Extractors/ DataSources
BCT InfoSources
Subject AreasMaster Data Transaction Data
0MATERIAL 0MATGR 0MATTYPE 0DOCNO 0CUSTOMER 0SALESPERS 0MATERIAL 0AMOUNT
BW Data Model definedby Business Content
BW E t d d St S h P t Si l
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 14
BW Ex t ended St ar Sc hem as Prevent Si los
Conformed dimensions enable virtual BW MultiProvider scenariosConformed dimensions enable virtual BW MultiProvider scenarios
FACT Table
Material_Dimension_ID..........._Dimension_ID.............Dimension_ID.............Dimension_ID
Key figure 1Key figure 2InfoCubeInfoCube
BB
LocalLocal Part ofMaterial Dimension
Material_Dimension_ID
0MATERIAL
0PROD_HIERMaterial Dimension
Table
FACT Table
Material_Dimension_IDSalesOrg_Dimension_IDTime_Dimension_IDCustomer_Dimension_ID
Sales AmountQuantity InfoCubeInfoCube
AA
Material_Dimension_ID
0MATERIAL
Material DimensionTable
G eb ie t 1 G eb i et 2 G eb ie t 3
Bezirk 1
Gebiet 3a
Bezirk 2
Region 1
G eb ie t 4 G eb ie t 5
Bezirk 3
Region 2
Gebiet 6
Bezirk 4
G eb ie t 7 G eb ie t 8
Bezirk 5
Region 3
Vertriebsorganisation
Material HierarchyTable
0MATERIAL
Language Code
Material Name
Material Text Table
Material Master Table
0MATERIAL
Material Type
LocalLocal Part ofMaterial Dimension
Conformed, SharedConformed, SharedPart of
Material Dimension
Material Dimension:Material Dimension:
local & conformed partlocal & conformed part
BW DWH D t M d l d E t i Wid BW
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 15
BW DWH Dat a Model and Ent erpr i se Wide BW
The BW Dat a Warehouse Dat a Model is t he g lue,w h ich t ies eve ry th ing toget her !
It protects against silos (stove pipe solutions, islands) Within a BW Instance
Within a BW Landscape
It is the basis for communication
Drill Thru between BW solution structures (InfoCubes, ODS-Objects)
within a BW Instance within distributed BW Instances
Drill Thru between BW solution structures and SAP applications
Between people
Enterprise BW Strategy: Usage of delivered BW DWH data model whenever possible
Central controlled guidelines for modifications and expansions
Content
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 16
Content
Enterprise Wide BWEnterprise Wide BW -- BackgroundBackground
Elements of a Corporate BW StrategyElements of a Corporate BW Strategy
The BW Data Model Prevents SilosThe BW Data Model Prevents Silos BW Data Layers Guarantee Reliability and FlexibilityBW Data Layers Guarantee Reliability and Flexibility
BW Corporate Landscape PatternsBW Corporate Landscape Patterns
Content
In t roduc ing a BW Layer Arc h i tec t u re to Guaran t ee
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 17
g yRel iab i l i t y and Flex ib i l i t y
PrimaryPrimary
DataData
ManagementManagement
DataData
AcquisitionAcquisition
DataData
DeliveryDelivery
SAP Business Information Warehouse andthe Corporate Information Factory (CIF)*
OperationalOperational
DataData
StoreStore
StagingStaging
AreaArea
EraoOSan
asoce
CleansingCleansing
TransformTransform
MasterReference
Data
DataData
WarehouseWarehouse
TransactionData
aag
ODisrbo
ArchitectedArchitected
Data MartsData Marts
Finance
Logistic
The Data MartThe Data Mart is customized and/or
summarized data derived from thedata warehouse
* Source: Bill Inmon
BW Arch i t ec t ed Dat a Mart Layer :
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 18
yThe Depart m enta l Layer What c an w e ex pec t ?
0CUSTOMERmaster
0MATERIALmaster
BW Extended Star Schema: InfoCubes
InfoObject Master Data(conformed dimensions)
0CUSTOMER
0MATERIAL
InfoCube A
0CUSTOMER
InfoCube B
0CUSTOMER
0MATERIAL
InfoCube C
The BW Data Mart Layer based on the BW Data Model and a
proper Project Methodoffers Consistency within the Data Marts (InfoCubes, ODS-Objekte)
Control of data redundancy (MultiProvider, Queries)
All desired historical views
...
BW Arch i t ec t ed Dat a Mart Layer :
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 19
yThe Depar t m enta l Layer Corporat e Needs ?
It is not the task of the scope-oriented Data Mart layer to anticipate
all kinds of future arising needs this would overload the schemasand corrupt performance
It cannot be expected that the data mart project teams have the 360
corporate view
We are limited from a corporate perspective in terms of Flexibility, Completeness
Reliability, Consistencyif we concentrate ourselves just on Data Marts.
BW Data Warehouse Layer the corporate layer
The BW (Ent erpr i se) Dat a Wareho use Layer:
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 20
The Corporat e Layer
SAP Business Information Warehouse andthe Corporate Information Factory (CIF)*
ODisrbo
StagingStaging
AreaArea
CleansingCleansing
TransformTransform
MasterReference
Data
DataData
WarehouseWarehouse
OperationalOperational
DataData
StoreStore
PrimaryPrimary
DataData
ManagementManagement
EraoOSan
DataData
AcquisitionAcquisition
DataData
DeliverDeliver
aag
asoce Transaction
Data
ArchitectedArchitected
Data MartsData Marts
* Source: Bill Inmon
Finance
Logistic
The result of the data transformationand cleansing process is storedpersistently: Subject oriented Integrated Granular Non volatile (historical) Not scope-specific (not flavored)
The BW (Ent erpr i se) Dat a Warehou se LayerTh C L Wh ?
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The Corporat e Layer What c an w e expec t ?
Rel iab il i t y , Trace bac k Prevent Si los Single point of truth
All data have to pass this layer on its path from the source to the summarizededw-managed data marts
Contro l led Ex t rac t ion and Dat a St ag ing (t ransform at ion,c leans ing) Data are extracted only once and deployed many
Merging data that are commonly used together
Flex ib i l i ty , Reusabi l i t y , Com pleteness
The data are not manipulated to please specific project scopes (unflavored) Coverage of unexpected ad hoc requirements (Support the Unknown) The data are not aggregated Old versions are not overwritten or changed but useful information may be added
In tegra t ion Data are integrated (as far as possible)
Realization of the corporate data integration strategy
...
The BW Data Warehouse Layer is the corporate memory, thecorporate information repository
In t roduc ing t he BW Dat a Warehouse Layer
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 22
In t roduc ing t he BW Dat a Warehouse Layer
Business Logic
Web templates,ReportsQueries
Data MartsData Marts(InfoCubes)(InfoCubes)
(E)DW Layer(E)DW Layer(ODS(ODS--Objects)Objects)
Extraction
Sources
Staging-Transformation,
Cleansing
Proje
ctTeam
(E)DW
AdminTe
am
1
1
1 111
22
Business Logic
Set upIncremental set up in parallel
with data marts guaranteesbuy in from business users
Technology
BW ODS-Objects Expanded InfoSources
define ODS-Objectstructures
BW flexible staging for
Master Data
Ownersh ip
Corporate Guidelines must be definedand administrators must be establishedto achieve the goals of a DataWarehouse layer
1 Increment
BW and Operat ional Dec is ion-Mak ing
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 23
BW and Operat ional Dec is ion Mak ing
SAP Business Information Warehouse andthe Corporate Information Factory (CIF)*
ODisrbo
StagingStaging
AreaArea
CleansingCleansing
TransformTransform
MasterReference
Data
DataData
WarehouseWarehouse
OperationalOperational
DataData
StoreStore
PrimaryPrimary
DataData
ManagementManagement
EraoOSan
DataData
AcquisitionAcquisition
DataData
DeliverDeliver
asoce Transaction
Data
ArchitectedArchitected
Data MartsData Marts
aag
Finance
Logistic
* Source: Bill Inmon
Operat iona l , Tac t ic a l and St ra t eg ic Dec is ion-Mak ing inTrad i t iona l BW Im plem ent a t ions
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Trad i t iona l BW Im plem ent a t ions
Most BW customers do not distinguish between strategic/tactical and operational decision-making using BW features: Precalculated aggregates of InfoCubes (aggregation awareness) Drill thru
tactical/ strategiconsummarized data:Data Marts
operationalon detailed, slightlysummarized data:Standard Collections
InfoCube withprecalculatedaggregates
Two InfoCubeswith Drill Thru
ODS-Object
InfoCube andODS-Objectwith Drill Thru
BWAchteeDaMs
Flex ib i l i t y o f BW Arc h i tec t ed Dat a Mar ts :D t M t & St d d C l l t i
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 25
Data Mar t s & St andard Co l lec t ions
Focus of traditionalFocus of traditional
BW implementations:BW implementations:
supportsupport
the unknownthe unknown
supportsupport
the knownthe knowndata martscenarios InfoCubes
summarized
tactical / strategic
decision-making
edw base tables
granular complete history ODS-Objects
flexibility &
reliability
standard collectionsdetailed, slightly summarized InfoCubes, ODS-Objects
operational
decision-making,flexibility
Lim i t s o f Us ing BW t he Trad i t iona l Way:In t roduc ing BW Operat iona l Data St ores
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 26
In t roduc ing BW Operat iona l Data St ores
The traditional usage of BW (with or without dwh-layer), which supports all
kinds of decision-making using Architected Data Marts has its limits If we want to provide event-level or close to event-level operational
reporting (near real time data warehousing) and/ or
If we are confronted with high data volumes (e.g. Retail)
s ev era -> ev ent l oadsG ranul arity XP SA
Sou rce G ranul arity X
DWHWHG ranul arity >=X
DWHOD SOb j ect
Data Martsata MartsG ranul arity > XI n oCub e
d aly-w eekly
Dedicated ODS-Objects (orInfoCubes) with granular data
support operational decision making Directly loaded from PSA
Short life cycle of data(Archiving, Near line Storage)
They build a BW Operational DataStore
G ranul arity X
I n oCub eOD SOb j ect
BWWOperationalperationalData Storeata Store
Abstrac t Layer Arc h i t ec t ure and t he Real i ty o f BW as Pac k agedSolut ion
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 27
Solut ion
Focus of traditionalFocus of traditional
BW implementations:BW implementations:
supportthe unknown
supportthe known
data martscenarios InfoCubes
summarized
tactical / strategic
decision-making
edw (base tables)
granular complete history ODS-Objects
flexibility,
reliability &data mining
standard collectionsdetailed, slightly summarized InfoCubes, ODS-Objects
operational
decision-making& flexibility
operational
decision-making& data mining
support
low latency &high volume
Operational Data Stores BW ods / BW PIPE for retail others most granular
Content
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 28
Enterprise Wide BWEnterprise Wide BW -- BackgroundBackground
Elements of a Corporate BW StrategyElements of a Corporate BW Strategy
The BW Data Model Prevents SilosThe BW Data Model Prevents Silos BW Data Layers Guarantee Reliability and FlexibilityBW Data Layers Guarantee Reliability and Flexibility
BW Corporate Landscape PatternsBW Corporate Landscape Patterns
Content
Ent erpr ise Dat a Warehouse as Single Point o f Trut h
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 29
DSS ApplicationsDepartmental Data Marts
EDW
MarketingAcctg Finance
SalesERP
ERPERP
CRM
eComm.
Bus. Int.
ETL
Global
ODS
Oper.
Mart
Explorationwarehouse/data mining
* Source: Bill Inmon
Staging
Area
local
ODS
DialogueManager
Cookie
CognitionPreformatted
dialogues
Cross media
Storage ManagementNear line
Storage
Web Logs
SessionAnalysis
Internet
ERP
CorporateApplications
Changed
Data
GranularityManager
Archives
The CorporateInformation Factory*
Basic Landsc ape Types
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The idea l c orpora te BW landsc ape tha t suppor ts a l l k ind
of dec is ion-m ak ing needs ?
EnterpriseBW
Hub & SpokeBW Enterprise
Data Warehouse SpokeBW
SpokeBW
Others
SpokeBW
Local
BW
Local
BW
Local
BW
GlobalBW
Outside-INMultiple Hubs &
Global BW
Others
Select the [IT] approach that fits most closely with corporatestrategy Prof. Sethi, University of Texas
Information&Management, 2/01
There is no one s ize f i t s a l l BW landsc ape!
Som e Inf luenc ers of a Corporat e BW Landsc ape
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 31
More and more operational, low-latency decision-making using BW
operationaldecision making
tactical/ strategicdecision making
edw &edw managed
data marts
operationalBW Objects
Mission critical BW applications in BW
mission criticalapplications
business criticalapplications
Local interests
central governancelocal freedom
Flexibility for time of migration and future acquisitions
Single Corporat e Wide BW Inst anc e
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Parameters Company time zones
Mission critical dominates others
Workload from operational reporting
Scalability
BW EDWW EDW
BWWArchitected Data Martsrchitected Data MartsPSASA
SanAe
BW ODSW ODSlatency: near real time
External Data Martsxternal Data Marts
mission critical business critical others
StandardtandardCollectionsollectionsDataataMartsarts
mission critical business critical
latency: >= 1 day
Handl ing Miss ion Cr i t ic a l and Operat ive Dec is ion-Mak ingSeparate ly
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 33
p y
mission critical strategic
BW EDWW EDW
BWOBWO
mission critical strategic
BWOBWO
business critical others
BWOBWO
Parameters
Company time zones
Mission critical dominates
EDW
Migration path from singleInstance
EDW separated from
majority of data marts
business critical others
BW EDWW EDW
BWOBWO
Parameters
Company time zones
EDW close to majority of
data marts
Mul t ip le Cent ra l Managed Loca l BWs t o Suppor tBus iness Cr i t ic a l Sc enar ios
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 34
Asia Europe Americas
EDWDWOO
business critical others business critical others business critical others
mission critical strategic
Local BWocal BW Local BWocal BW Local BWocal BW
Global BWlobal BWParameters
Scalable
Mission critical dominates
EDW
EDW separated from
majority of data marts
OO OO OO
Summary
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SAP AG 2004, Enterprise Wide BW, J. Haupt / 35
BW offers a wide range of features that supportenterprise wide data warehousing needs.
Nevertheless a strategy and an organizational momentummust exist to realize an enterprise wide BW strategy.
Quest ions
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Any
Questions?
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Copyr ight 2004 SAP AG. Al l Right s Reserved
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