Sample Sales Re Engineering in OBIEE 11g Part II

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Sample Sales Reengineering in OBIEE 11g Part II

This is one of our documents from OBIEE for Beginners series. The document shows how to rebuild

the sample sales rpd, reports and dashboard shipped with OBIEE10g. The Sample Sales RPD, Reports

and Dashboard is designed such a way that it covers all the import features of OBIEE. The document

contents the BEST technique to learn OBIEE Repository Building. Join our professional training program

to learn OBIEE from the experts.

History:

Version Description Change Author Publish Date

0.1 Initial Draft Hitesh Mankar 10th Jan 2011

0.1 1stReview Amit Sharma 10th Jan 2011

Learnhyperion.wordpress.com http://learnoraclebi.wordpress.com | Business Intelligence Solution Providers 1


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Table of Contents

Sample Sales Reengineering in OBIEE 11g Part I

1. Understanding the Data Model

Dimension and Fact Tables details

Relationship Diagram

2. Building Physical Layer

Importing Metadata from Sources

Creating Alias Tables

Creating Physical Model

Sample Sales Reengineering in OBIEE 11g Part II

3. Building BMM layer

Creating Logical Dimension Table

Creating Logical Table Sources (Multiple)

Creating Dimension Hierarchies

Creating Simple Measures

Creating Repository Variables

Creating Time series Measures

Creating Rolling Measures

Creating Level Based Measures

Creating Derived Measures

Creating Business Model Diagram

Sample Sales Reengineering in OBIEE 11g Part III

4. Building Presentation Layer

Creating Presentation Catalogues

Creating Presentation Tables

Creating Presentation Columns

5. Testing and Validating Repository

Configuring RPD

Creating Request

View Logical Query



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2.Building Business Model and Mapping Layer

The business model simplifies the physical schema and maps the users business terms to physical

sources. It represents the logical structure of the information in the repository. The business models

contain logical columns arranged in logical tables, logical joins, and dimensional hierarchy definitions

This layer also contains the mappings from the logical columns to the source data in the Physical layer

means specifies the mapping between the business models and the Physical layer schemas.

The goal of building business model is to define how users think about their business using their own

business terms.

1. Creating Logical Schema/ Business Model.

Right click in the blank middle pane of the Oracle BI Administration Tool and select the New Business

Model option. Specify a name samplesales for the business model.

This schema is not ready for query, so its appeared with a red mark over on the schema icon.

2. Creating Logical Tables.

Now create new logical dimension and fact table.

Right click on the logical schema select New Object Logical Table

Create empty logical tables manually as per below list, without any source and column.



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3. Creating Logical Table Sources.

Create logical table sources for all the logical tables,

3.1 Select a table (Here D0 Time table is selected) Right click, elect New Object Logical Table Source

3.2 Now give a name for logical table sourceclick on the green + plus sign.

3.3 In the next window select and expand the physical schema

Select a physical table

click on Selectbutton to make it logical table sources (here samplesales1 schema is expanded and A07 Time Day is

selected).

3.4 Check the new logical table source is mapped with physical table source.

3.5 Check and verify into Business model and mapping layer the new logical table source under the

logical table.



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3.6 Now use above steps to create more required logical table sources, First create sources for

dimension tables using below matrix, having Logical table name, logical table source name and physical

table source to map. (Here logical table source B08 Time Mth is mapped with physical schema2

samplesales2 B08 Time Mth and D0 Time, D1 Customer, D6 Dim Degenerated Facts having multiple

logical table sources).

Create Logical table sources for Fact Tables

3.7 Now create logical table sources for fact tables (Here F3 Rolling Measures logical table has three

logical table sources and each logical table source is mapped with multiple physical table sources).

Follow the steps from 3.1 to 3.5 to create logical table sources and map the logical table source from

multiple physical table sources using add table source.

When any logical table source is mapped with two physical table sources then joins were automatically

detected with its type.



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4.2) Now click on the Logical Table Source Select Column Mapping Tab (select Show unmapped

ColumnsCheck the newly created logical column will appear).

4.3) Click below Physical Table first to select the physical table for this current logical table source then

click below of Expression to select the column from physical table.

4.4) Go back to column properties Column Source, Check column source type Derived from Physica

sources, you can see the mapping information to verify the mapping.

4.5) Similarly create other logical columns and also can map one logical column form two logical table

sources using step 4.3. Create new logical columns as per below given list.



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Map all the columns as per given mapping information, here some columns were mapped from multiple

logical table sources. Columns mapped from logical table sourcesA07 Time Day.



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Columns mapped from logical table sourcesA08 Time Mth.

Columns mapped from logical table sources B08 Time Mth.



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4.6) Create logical columns for logical table D1 Customer and map columns as per below given list.

Columns mapped from logical table sourcesA01 Customer.

Columns mapped from logical table sourcesA09 Segment.



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4.7) Create logical columns for logical table D2 Marketand map columns as per below given list.

Columns mapped from logical table sourcesA02 Market.

4.8) Create logical columns for logical table D3 Order and map columns as per below given list.

Columns mapped from logical table sourcesA02 Market.



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4.9) Create logical columns for logical table D4 Product and map columns as per below given list

Columns mapped from logical table sources A05 Produ

4.10) Create logical columns for logical table D5 Employee and map columns as per below given list

Columns mapped from logical table sources A06 Employ



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4.11) Create logical columns for logical table D6 Dim Degenerated Facts and map columns as per below

given list.

Columns mapped from logical table sources 11 Revenue (Billed Time Join).

Columns mapped from logical table sources 12 Revenue (Booked Time Join).



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5. Creating Dimension Hierarchies

A Dimension Hierarchy allowing Oracle BI Server to calculate useful measures, allowing users to drill

down for more details. For every dimension hierarchy you need to organize all dimension attributes in

hierarchical levels which represent the organizational rules and reporting needs required by your

business. These hierarchy levels provide the structure that Oracle BI Server uses to drill into and across

dimensions to get more detailed views of the data. Levels of dimension hierarchy are used to perform

aggregate navigation, configure level-based measure, calculations and determine what attributes appearwhen Oracle BI users drill down in their data requests.

Each level has at least one logical key, the top level is marked as the grand total level, and you can drag

other attributes in to each level and have OBI EE display those, rather than the level key, when users drill

down in reports. At present, you have to create these dimensions manually when setting up your

business model and mapping layer, although there is talk about automatically creating these when

importing Oracle dimensions or OLAP structures.

First of all Update All Rows Counts check how many rows in every table and last updated state. This

will help you to define level number of members at this level for each level of all the hierarchies

5.1 Now first step is to create a logical dimension hierarchy, create a logical dimension object. There are

two methods to create logical dimension objects.

Method1:- Right Click on the Business model in BMM layer select New Object Logical Dimension

Dimension with Level Based Hierarchy.(Here structure is selected as Time because its a time dimension for

other dimension hierarchies dont select Time as structure )

Method2:- Right Click on a logical dimension table and select Create Dimension Dimension with Level-

Based Hierarchy, this will create a dimension hierarchy for the selected dimension table



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Let`s continue with Method1 to create dimension hierarchies.

5.2 Start to add a logical level which is highest level of hierarchy. Right click on the logical dimension and

select New Object Logical level.

5.3 Give a name to this level select Grand Total Level, basically the first level should be grand total

level. (Selecting the Grand total level check box is to indicate that this is the grand total level of thishierarchy).

5.4 Now add a child level to dimension hierarchy.

Right-click on the Parent level (Total) and select New Object Child Level.

Give a name for the level and enter the Number of levels at this level.Now you need to identify the number of elements for each level. The number of elements represents the

distinct count of rows for each level and is used by Oracle BI Server to determine the most efficient way to

access data when picking aggregate sources. The number does not have to be exact, but ratios of numbers

from one level to another should be accurate and you want to enter a larger number for child levels in

respect to parent levels.

Enter number of elements at this level from updated all row counts and ener value that how many rows

year column contains.



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5.5 Similarly add more child levels below this level as shown in below screen shot.

5.6 Create Level Keys: - Level keys define the unique elements in each level and provide the context fordrill down. Each level needs to have one or more attributes that compose a level key. The level key defines

the unique elements in each level and provides the context for drill down.

A level may have more than one level key. When that is the case, you need to specify which key is the

primary key of that level. All dimension sources that have aggregate content at a specified level need to

contain the column that is the primary key of that level.

To create Level keys drag a logical column which could be the key for that level.

5.7 Double-click a level to open the level properties window Click the Keys tab and enter key name

click on the primary keys dropdown select the key name to enable the edit and delete button .

Then click on edit button to open the logical key dialog box for this level. Select a column form

columns to create a key column for this level and select use for display click ok.

5.8 Check out the changes and assigned key at the level click ok. The color of level key icon will change.



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5.9 Similarly assign keys for each level using steps 4.6 to 4.8.

5.10 Now just follow the above steps from 4.1 to 4.8 and create other dimension hierarchies, levels andlevel keys as per the below given screen shots.

H1 Customer Hierarchy

H2 Market Dimension Hierarchy

H3 Order Dimension Hierarchy



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H4 Product

H5 Employee

H6 Dim Fact Attributes Dimension Hierarchy

(Right click on the level keyA-00 Order Keyclick on set icon select ghost icon to set.)

6. Creating Repository Variables



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Click on Manage option into Oracle BI Administration Tool select Variables, The variable manager

window will open.

Expand the Repository section Click on Static right click into right pan click on New Repository

Variable, a Static Repository Variable window will open.

Enter name for the variable Select Type and Enter Default Initializer value.

Using above steps create two more static variables as shown below.

7. Creating Measures (Logical Columns) into Fact tables.

7.1) Creating a measure/ logical column without mapping with any source and column.



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7.1.1) Right click on table select New Object Logical Column click on General tab enter name for

the new measure or logical column.

7.1.2) Click on Column Source Select Derived from existing column using an expression enter an

expression click ok

7.1.3) Right click on Set an Icon to recognize this column, choose paper icon and click ok.

7.2) Creating a measure/ logical column Derived from physical columns mappings and applying Default

Aggregation Rule. (Its similar to creating and mapping a new logical column from physical source and

column).



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7.2.1) Create a column and then select column source tab select Derived from physical source

mappings. (Follow steps 4.1 to 4.4).

7.2.2) Click on next tab Aggregation select an aggregation rule from Default aggregation rule

dropdown list and click ok.

7.2.3) The logical column icon will change its color automatically after applying the aggregation rule, this

will show that any aggregation rule is applied on that column.

7.3) Creating a measure/ logical column Derived from physical columns mappings and applying

Aggregation Rule Based on Dimension Hierarchy.

7.3.1) Create a column and then select column source tab select Derived from physical source

mappings. (Follow steps 4.1 to 4.4).



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7.3.2)Click on the Expression builder select and aggregate (aggregation rule) and click on the

insert selected item

7.3.3) Select logical tables from top left pane Categoryselect a fact table from Logical tables pane thenselect a measure from bottom pan click on click insert selected item arrow key

and click ok.



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7.3.4) Check out the aggregation expression formula in Aggregation tab

7.3.5) Click on green plus sign to add more formula based on logical dimension

7.4) Creating Time Series Measures

CreatingAgo Measurefirst of all you need to identify Time Dimension and set Chronological Key.



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7.4.1) Here H0 Time is a time dimension double click on HO Time Dimension and select Time in the

structure section and also set chronological key for all its levels as shown in the below screen shot.

7.4.2) Create a new logical column and select Derived from existing logical column using an expression

click on Edit Expression button .

7.4.3) select Function from category pane Time Series from Function and Ago from Time Series

Functions.

7.4.4) Select Logical Tables from category Select a logical table from Logical Tables select a column

from columns then click on Measures in Ago function expressionClick insert Selected Items .



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7.4.6) Check the new derived column and its expression.

Creating To date Measure


click on Edit Expression button.

7.4.8) select Function from category pane Time Series from Function and TODATE from Time Series

Functions.

7.4.9) Select Logical Tables from category

Select a logical table from Logical Tables

select a columnfrom columns then click on Measures in TODATE function expressionClick insert Selected Items .

7.4.10) Now select Time Dimension from CategorySelect Time Dimension name from Time

DimensionsSelect a level of dimension from bottom pane Click on Level and then click Insert

Selected Items .



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7.5) Creating a measure/ logical column from existing logical columns,Repository Variablesand usingDisplay Function Filter.


click on Edit Expression button.

7.5.2) Select Function from category pane Display Function from Function and Filter from Display

Functions.

7.5.3) Select Logical Table from category panea Logical table from Logical tables Logical column

from columns then Select click Insert Selected Items .



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7.5.4) Select another column from logical table Click on after Using and click Insert Selected

Items now enter a minus sign (-) { to subtract values of one column from another column} and

follow the same step to insert another column.

(Similarly you can apply or use more mathematical functions like division, addition, multiplication etc.)

7.5.6). Now add a less than sign (


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7.6.2) Select Functions from category Select Calendar Date/ Time functions from

functionsTimestampDiff from Calendar Date/ Time functions Select from CASTfunction and click on Insert selected items.

7.6.3) Select Interval and type DAY

select a logical column and click on firsttimestampExpr

and clickon Insert selected items.

Select a logical column and click on second timestampExpr and click on Insert selected items.



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7.6.4) Select Types from Category Double from Types click on and click on Insert

selected items and add +1 after bracket

7.7) Creating a measure/ logical column derived from existing logical columns using Conversion

Function and Calender Date/ Time Function and EXTRCT. Type extract before the syntax.



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8).Creating Business Model Diagram

Create business/ logical model diagram using relationships between dimension and fact tables as

below diagram.

Documents

Sample Sales Re Engineering in OBIEE 11g Part II