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Implementing Oracle BI EE on Top Implementing Oracle BI EE on Top Implementing Oracle BI EE on Top Implementing Oracle BI EE on Top of Oracle OLAP Cubes of Oracle OLAP Cubes of Oracle OLAP Cubes of Oracle OLAP Cubes
Collaborate 08 Paper 221Collaborate 08 Paper 221Collaborate 08 Paper 221Collaborate 08 Paper 221April 16, 2008
Dan Vlamis
Vlamis Software Solutions, Inc.
816-781-2880
http://www.vlamis.com
Copyright © 2008, Vlamis Software Solutions, Inc.
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Vlamis Software Solutions, Inc.
• Founded in 1992 in Kansas City, Missouri• Oracle Partner and reseller since 1995• Specializes in ORACLE-based:
� Data Warehousing� Business Intelligence
Copyright 2007, Vlamis Software Solutions, Inc.
� Business Intelligence� Data Transformation (ETL)� Web development and portals� Express-based applications
• Delivers� Design and integrate BI and DW solutions� Training and mentoring
• Expert presenter at major Oracle conferences
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Who Am I?
• Dan Vlamis, President of Vlamis Software� Developer for IRI (former owners of Express)
� Founded Vlamis Software in 1992
Copyright 2007, Vlamis Software Solutions, Inc.
� Founded Vlamis Software in 1992
� Beta tester and early adopter of Oracle OLAP
� Expert speaker and author
� “Techie” on OLAP DML
� Recognized expert in Express and OLAP industry
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Vlamis Collaborate Presentations
Presenter Num Time Title
Chris Claterbos
U10 Sun, 9-5How to Use Oracle Business Intelligence (BI) to Solve Real World Problems
Dan Vlamis 207 Mon, 1-2Oracle BI, Oracle OLAP, Essbase: The Benefits and Cost of Openness
Copyright 2008, Vlamis Software Solutions, Inc.
Openness
Dan Vlamis 211 Mon, 3:30-4:30 Accelerate Your Oracle DW With OLAP 11g
Genco, Mark Thompson
212 Tues, 9:45-12 Integrating Oracle BIEE with Oracle Analytic Workspaces
Chris Claterbos
219 Tues, 3:30-5:45 Building Cubes and Analyzing Data Using Oracle OLAP 11g
Dan Vlamis 221 Wed, 8:30-9:30 Implementing Oracle BI EE on Top of Oracle OLAP Cubes
Mesirow, Chris Claterbos
223 Wed, 9:45-10:45Achieving Complex Statistical Modeling with Fast Results Using Oracle OLAP
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Agenda
• Brief background of BI EE and Oracle OLAP
• Demonstration of BI EE on Oracle OLAP
• Why Oracle OLAP?
• What is Oracle OLAP?
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• What is Oracle OLAP?
• Oracle OLAP storage options
• Structure of Analytic Workspace
• Building OLAP Cubes
• 11g OLAP – what changes?
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Oracle BI Suite Enterprise EditionUnified Business Intelligence InfrastructureUnified Business Intelligence InfrastructureUnified Business Intelligence InfrastructureUnified Business Intelligence Infrastructure
ProactiveDetectionand Alerts
DisconnectedAnalytics
Ad-hoc Analysis
MS OfficePlug-in
Reporting & Publishing
Interactive Dashboards
Simplified Business Model and Abstraction Layer
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OracleBI Server
OLTP & ODSSystems
Data WarehouseData Mart
SAP, OraclePeopleSoft, Siebel,
Custom Apps
FilesExcelXML
BusinessProcess
Multidimensional Calculation and Integration Engine
Intelligent Caching Services
Intelligent Request Generation and Optimized Data Ac cess Services
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Are You Smarter Than a 5th
Grader?
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Arrays as Defined by a 5th Grader
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Courtesy Alexander Doniphan Elementary School, Libe rty, Missouri
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Demo of BI EE on Oracle OLAP
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BI EE Metadata Editor
Data Flows
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ROLAP vs. MOLAP
• What is ROLAP? (Relational)
• What is MOLAP? (Multidimensional)
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• It's all in how the data is stored
Relational Multidimensional
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Oracle Performance Case StudyOracle Applications: Finance DBI
480
300
400
500
600
Min
utes
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90
100
200
300
Materialized Views (partiallyaggregated*)
OLAP (fully aggregated**)
Min
utes
6 MillionInput Rows
* MV aggregated 1 dimension and 1 measure** OLAP aggregated 7 dimensions and 11 measures
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Oracle Performance Case StudyAd Hoc Queries Across Summary Levels
469
400
500
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20
0
100
200
300
400
Without OLAP With OLAP
Min
utes 3450 Queries against
250 million rows
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• A summary management solution for SQL based business intelligence applications
• An alternative to table-based materialized views, offering improved query
OLAP 11g Option
performance and fast, incremental update
• A full featured multidimensional OLAP server
• Excellent query performance for ad-hoc / unpredictable query
• Enhances the analytic content of Business intelligence application
• Fast, incremental updates of data sets
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Materialized ViewsTypical MV Architecture Today
• Query tools access star schema stored in Oracle data warehouse
• Most queries at a
select month, state,sum(revenue)
from sales, time, customergroup by month, state PRODUCT
item_idsubcategory
• Most queries at a summary level
• Summary queries against star schemas can be expensive to process
SALESday_idprod_idcust_idchan_idquantitypricerevenue TIME
day_idmonthquarteryear
CUSTOMERcust_idcitystatecountry
subcategorycategorytype
CHANNELchan_idclass
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Materialized ViewsAutomatic Query Rewrite
• Most DW/BI customers use Materialized Views (MV) today to improve summary query performance
• Define appropriate summaries based on query patterns
SALES_MSmonthstatequantityrevenue
Month, Stateselect month, district,sum(revenue)
from sales, time, custgroup by month, district
patterns• Each summary is typically
defined at a particular grain� Month, State� Qtr, State, Item� Month, Continent, Class� etc.
• The SQL Optimizer automatically rewrites queries to access MV’s whenever possible
SALES_YCyear_idcontinent_idquantityrevenue
Year, Continent
revenue
SALESday_idprod_idcust_idchan_idquantitypricerevenue
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Materialized ViewsChallenges in Ad Hoc Query Environments
• Creating MVs to support ad hoc query patterns is challenging
• Users expect excellent
SALES_MCCmonth_idcategory_idcity_idquantityrevenue
Month, City, Category
SALES_QSIqtr_iditem_idstate_idquantityrevenue
Qtr, State, Item
SALES_MSmonthstatequantityrevenue
Month, State
• Users expect excellent query response time across any summary
• Potentially many MVs to manage
• Practical limitations on size and manageability constrain the number of materialized views
revenue
SALES_YCCyear_idcategory_idcity_idquantityrevenue
Year, City, Category
SALES_YCCyear_idcategory_idcontinent_idquantityrevenue
Year, Continent, Category
revenue
SALES_XXXXXX_idXXX_idXXX_idexpense_amountpotential_fraud_cost
Cust, Time, Prod, Chan Lvls
SALES_XXX
XXX_idXXX_idXXX_idexpense_amountpotential_fraud_cost
SALES_XXXXXX_idXXX_idXXX_idexpense_amountpotential_fraud_cost
SALES_XXXXXX_idXXX_idXXX_idquantityrevenue
SALES_YCTyear_idtype_idcontinent_idquantityrevenue
Year, District
SALESday_idprod_idcust_idchan_idquantityrevenue
SALES_YCyear_idcontinent_idquantityrevenue
Year, Continent
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Easy AnalyticsFast Access to Information Rich Results
• Time-series calculations
• Calculated Members
• Financial Models
• Forecasting
Snapshot of some functions
• Forecasting� Basic
� Expert system
• Allocations
• Regressions
• Custom functions
• …and many more
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Easy AnalyticsOptimized Data Access Method
• Data stored in dense arrays• Offset addressing – no joins
How do Expenses compare this Quarter versus Last Quarter
What is an Item’s Expense contribution to its Category?
• Offset addressing – no joins• More powerful analysis• Better performance
Time
Category
Hotel
ExpensesLunch
Food
Q1 Q2 Q3SF
West
Northeast
Market
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Cube Represented as Star ModelSimplifies Access to Analytic Calculations
• Cube represented as a star schema
• Single cube view presents data as completely calculated
CUSTOMER_VIEWcust_idcity
PRODUCT_VIEWprod_idsubcategorycategorygroup
calculated• Analytic calculations
presented as columns• Includes all summaries
• Automatically managed by OLAP
SALES_CUBEVIEWday_idprod_idcust_idchan_idsalesprofitprofit_yragoprofit_share_parent
TIME_VIEWday_idquartermonthyear
citystateregion
CHANNEL_VIEWchan_idclasstotal
SALESCUBE
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Further InformationFurther Information
• Oracle BI Sales� http://www.oracle.com/bi
• Oracle BI Technical� http://www.oracle.com/technology/tech/bi/index.html
• VMWare image with Demo environment� www.bic2g.com
Copyright 2007, Vlamis Software Solutions, Inc.
• Oracle OLAP and AWM Sales� http://www.oracle.com/solutions/business_intelligen ce/olap.html
• Oracle OLAP Technical� http://www.oracle.com/technology/products/bi/olap/i ndex.html
• This Demo� http://www.vlamis.com/demo
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Why a Separate OLAP Tool?
• Empowers end-users to do own analysis
• Frees up IS backlog of report requests
•
Copyright 2007, Vlamis Software Solutions, Inc.
• Ease of use
• Drill-down
• No knowledge of SQL or tables required
• Exception Analysis
• Variance Analysis
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Top 11g New OLAP Features
• SQL Query� SQL cube scan
� SQL cube join
� CUBE_TABLE� CUBE_TABLE
� Optimized looping
� System maintained dimension and fact views
• SQL-like calculation expressions
• Cost-based aggregation
• Security� SQL Grant / Revoke
� Permit with Extensible Data Security and AWM
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Top 11g New OLAP Features
• Cube and maintenance scripts� Declarative calculation rules
� Based on logical model
• All meta data in the Oracle Data Dictionary• All meta data in the Oracle Data Dictionary� Dimensional Model
� Calculation definitions
� Security policies
� Data source mappings
� SQL representation of model
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OLAP 11g Changes
• New CUBE_TABLE function simplifies access to AW data (replacing OLAP_TABLE)
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OLAP 11g Changes
• Views automatically created for SQL access to AWs – Dimensions and Cubes!
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OLAP 11g Changes
• Views easily accessed from SQL Developer
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OLAP 11g Changes
• Automatic views accessible from AWM
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OLAP 11g Changes
• Query Rewrite knows about AWs now
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OLAP 11g Changes
• Optimizer pushes joins down to AW• Enables efficient non-OLAP-aware SQL queries
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OLAP 11g Changes
• Views are stored in Oracle Dictionary• Notice in SYS .USER_DIMENSION_VIEWS
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OLAP 11g Changes
• Cost-based presummarization balances aggregation time with performance
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OLAP 11g Changes
• Native support for AWs with skip level and ragged hierarchies
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OLAP 11g Changes
• Create security policies based on hierarchies
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OLAP 11g Changes
• Calc Wizard replaced by powerful "complete the sente nce" wizard• Expression language more SQL-like• EQs of Calculated Measures in 11g-format AWs "read- only"
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OLAP 11g Changes
• Can Create AWs in 11g mode (automatic views)• If no 11g mode, have same flexibility as 10g
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One Cube, Dimensional or SQL Tools
OLAP Query
MetadataData
Business Rules
SQL Query
OLAP Query
Extract, Load& Transform (ELT)
Centrally managed data, meta data and business rule s
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OBI EE and OLAP Futures
• OBI EE 11g knows about Oracle OLAP� Click on cube and deploy in OBI EE
• "Answers Plus" adds OLAP functionality� Drill down and drill up within column
� Additional calculated measure capabilities
� Driven by feature set in Discoverer Plus
� Built into OBI EE 11g
� Features available regardless of source
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QUESTIONS?
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Implementing Oracle BI EE on Top Implementing Oracle BI EE on Top Implementing Oracle BI EE on Top Implementing Oracle BI EE on Top of Oracle OLAP Cubesof Oracle OLAP Cubesof Oracle OLAP Cubesof Oracle OLAP Cubes
Collaborate 08 Paper 221Collaborate 08 Paper 221Collaborate 08 Paper 221Collaborate 08 Paper 221April 16, 2008
Dan Vlamis
Vlamis Software Solutions, Inc.
816-781-2880
http://www.vlamis.com
Copyright © 2008, Vlamis Software Solutions, Inc.