Cognos.trainer@gmail.com
+91-8095001166
CC
Cognos Connection
RS
Report Studio
AS
Analysis Studio
QS
Query Studio
ES
Event Studio
CS
Content Store
FWM
Framework Manager
Cognos.trainer@gmail.com
+91-8095001166
Cognos 8 Architecture
Cognos 8 has a multitier architecture. For description purposes, it can be
separated into three tiers: Web server, applications, and data. The tiers
are based on business function, and are typically separated by network
firewalls. Cognos 8 user interfaces sit above the tiers.
Cognos.trainer@gmail.com
+91-8095001166
Tiered Architecture
Tier 1
Web
Tier 1
Web
Tier 2
Application
Tier 3
Data
Cognos.trainer@gmail.com
Dispatcher
Presentation
Administration
Notification
Reporting
Scheduling
Logging
Web Server
Gateway
Tier 2
Application
Tier 3
Data
Content
Management
Security
+91-8095001166
Cognos 8 Architecture
Cognos 8 has a multitiered architecture. For description purposes, it can
be separated into three tiers: Web server, applications, and data. The
tiers are based on business function, and are typically separated by
network firewalls. Cognos 8 user interfaces sit above the tiers.
Cognos.trainer@gmail.com
+91-8095001166
Cognos 8 Architecture
Cognos.trainer@gmail.com
+91-8095001166
Cognos.trainer@gmail.com
+91-8095001166
Tier 1: Web
Web Server
Intranet
Extranet
Gateway
Web Server
Gateway
Tier 2
Cognos.trainer@gmail.com
+91-8095001166
Web Server: Cognos 8 Gateways
The Cognos 8 Web server tier contains one or more Cognos 8 gateways.
Web communication in Cognos 8 is typically through gateways, which reside
on one or more Web servers. A gateway is an extension of a Web server
program that transfers information from the Web server to another server.
When a Cognos 8 gateway receives a request, it
• encrypts passwords to ensure security
• extracts information needed to submit the request to a Cognos 8 server
• attaches environment variables for the Web server
• adds a default namespace to the request to ensure that the server
authenticates the user in the correct namespace
• passes requests to a Cognos 8 dispatcher for processing
Cognos.trainer@gmail.com
+91-8095001166
Tier 2: Application
Cognos.trainer@gmail.com
+91-8095001166
Applications: Cognos 8 Servers
The Cognos 8 applications tier contains one or more Cognos 8 servers. A
Cognos 8 server runs requests, such as reports, analyses, and queries,
that are forwarded by a gateway.
Cognos 8 Servers includes
•Dispatcher
•Content Manager
Dispatcher
The dispatcher starts all Cognos 8 services configured and enabled on a
computer, and routes requests.
Content Manager
Content Manager is the Cognos 8 service that manages the storage of
customer application data, including security, configuration data, models,
metrics, report specifications, and report output. Content Manager is
needed to publish models, retrieve or store report specifications, manage
scheduling information, and manage the Cognos namespace.
Cognos.trainer@gmail.com
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Tier 2: Dispatcher
 Java Servlet running on Tomcat (OOTB)


Load balancing and request delivery
Main entry point for inbound requests from web server gateway
 Load balancing

Redirect requests to other dispatchers
 Request delivery

Determines which service performs the request
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Tier 2: Dispatcher - Request
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Tier 2: Dispatcher - Load Balance
Cognos.trainer@gmail.com
+91-8095001166
Tier 2: Administration Scheduling
and Notification
Cognos.trainer@gmail.com
+91-8095001166
Tier 2: Report
Cognos.trainer@gmail.com
+91-8095001166
Tier 2: Logging
Cognos.trainer@gmail.com
+91-8095001166
Tier 3: Data
Cognos.trainer@gmail.com
+91-8095001166
Tier 3: Security
Cognos.trainer@gmail.com
+91-8095001166
User Interfaces
Web-based interfaces
Cognos Connection
Query Studio
Report Studio
Analysis Studio
Event Studio
Metric Studio
Cognos.trainer@gmail.com
Windows-based interfaces
Framework Manager
Transformer
Metric Designer
+91-8095001166