0281e1a7 9456 4dc7 b16b f8be15f19cd2 [compatibility mode]

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Oracle BI Architecture Components

This lesson describes the following architecture componentsand their relationships: Clients Oracle BI Presentation Services Oracle BI Server

Copyright 2008, Oracle. All rights reserved.1 - 1

Oracle BI repository Data sources

ClientsOracle BI

PresentationServices

OracleBI

Server

Datasources

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Clients

Provide access to business intelligence information Oracle BI Answers

Is a set of graphical tools used to build, view, and modifyOracle BI requests

Oracle BI Interactive Dashboards


sp ay e resu s o nswers reques s an o er ems

Oracle BI Administration Tool Is used to build an Oracle BI repository

ClientsOracle BI


OracleBI

Server

Datasources

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Oracle BI Presentation Services

Provides the processing to visualize the information for clientconsumption

Is implemented as an extension to a Web server Uses a catalog to store saved content Receives data from Oracle BI Server and provides it to the


c en a reques e

ClientsOracle BI


Datasources

OracleBI

Server

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Oracle BI Server

Is the core server behind Oracle Business Intelligence Provides efficient processing to access physical data

sources and structure information intelligently Uses metadata to direct processing

Generates dynamic SQL to query data in the physical data


Connects natively or through ODBC to the RDBMS Structures results to satisfy requests Provides BI data to Oracle BI Presentation Services

ClientsOracle BI


Datasources

OracleBI

Server

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Oracle BI Repository

Stores the metadata used by Oracle BI Server Is accessed and configured using the Oracle BI

Administration Tool, which you use to: Import metadata from databases and other data sources

Simplify and reorganize the metadata into business models


ruc ure e us ness mo e or presen a on o users w orequest information

Repository

ClientsOracle BI


OracleBI

Server

Datasources

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Data Sources

Contain the business data that users want to analyze Are accessed by Oracle BI Server Can be in any format, such as:

Relational databases Online analytical processing (OLAP) databases


Flat files Spreadsheets XML for Analysis (XMLA)

ClientsOracle BI


OracleBI

Server

Datasources

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Sample Request Processing

1. User views a dashboard or submits a request.2. Oracle BI Presentation Services makes a request to Oracle

BI Server to retrieve the requested data.3. Using the repository file, Oracle BI Server optimizes

functions to request the data from the data sources.


. and processes as necessary.

5. Oracle BI Server passes the data to Oracle BI PresentationServices.

6. Oracle BI Presentation Services formats the data andsends it to the client.

ClientsOracle BI

PresServices

Oracle BIServer

Datasources

1 2 3

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Oracle BI Administration Tool

Exposes the Oracle BI repository as three separate panes,called layers: Physical Business Model and Mapping (BMM) Presentation


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Physical Layer

Contains objects representing the physical data sources towhich Oracle BI Server submits queries

May contain multiple data sources Is typically the first layer built in the repository


Data sources

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Physical Layer Objects

Are objects in the Physical layer, such as connection pools,folders, tables, columns, and keys Expand a database object to display the objects it contains.

Database


Connection pool

Schema folder

Tables

Columns

Key

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Business Model and Mapping Layer

Is where physical schemas are simplified and reorganized toform the basis of the users view of the data.


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Business Model and Mapping Layer Objects

The Business Model and Mapping layer contains businessmodel objects.

Business model

Dimension hierarchies


Logical dimension tables

Logical table source

Logical columns

Logical fact table

Measures

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Business Model Mappings

Business Model and Mapping layer objects map to sourcedata objects in the Physical layer.

Mappings are typically not one-to-one: Business models may map to multiple data sources.

Logical tables may map to multiple physical tables.


og ca co umns may map o mu p e p ys ca co umns.

Mappings

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Measures

Are the facts that a business uses to evaluate itsperformance

Can be calculations that define measurable quantities Are created on logical columns in the fact table

Have a defined aggregation rule


Icon denotes anaggregation rule.

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Presentation Layer

Contains presentation objects that provide a customizedview of a business model to users

Simplifies and organizes the business model to make it easyfor users to understand and query

Exposes only the data meaningful to the users


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Presentation Layer Mappings

Presentation layer objects map to objects in the BusinessModel and Mapping layer.

Presentation catalogs


map to the business

model.

Presentation tables maymap to logical tables.

Presentation columnsmap to logical columns.

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Presentation Layer Defines User Interface

Presentation layer objects define the interface that users see toquery the data from the data sources.

Presentationcatalog Subject area


Presentationfolder

Presentationcolumn

Folder

Column

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Repository Directory

Repository files reside in the \OracleBI\server\Repository directory, where the Oracle BIsoftware is installed.


Default location ofrepository files

Oracle BIRepository file

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Repository Modes

Repository files can be opened for editing in offline or onlinemode. Offline

Repository is not loaded into Oracle BI Server memory.

Online:


epos ory s oa e n o rac e erver memory. Administrators can perform tasks not available in offline

mode: Manage scheduled jobs Manage user sessions Manage the query cache Manage clustered servers Stop Oracle BI Server

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Adding an Entry in NQSConfig.ini

NQSConfig.ini is a configuration file read by Oracle BIServer to determine which repository to load into memory.

Default location ofNQSConfig.ini

file


Repository to load

Commented out

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Reloading Server Metadata

Click the Reload Server Metadata link in Answers to refresh theview of Oracle BI metadata.


Reload Server Metadata link

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Summary

In this lesson, you should have learned how to: Identify and describe the major components of the Oracle BI

architecture Identify and describe the three layers of an Oracle BI

Repository and how they relate to each other


se e rac e m n s ra on oo o exp ore repos oryobjects

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Practice 1-1 Overview:Exploring an Oracle BI Repository

This practice covers the following topics: Exploring the Physical layer of a repository Exploring the Business Model and Mapping layer of a

repository

Exploring the Presentation layer of a repository


Loading a repository into memory Submitting a request using Oracle BI Answers

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