This document  helps in identifying the Features and differences across the  various versions of Quality Center. There are many  useful features available with the latest version  (Quality Center 10)

1)Storing Project Data in the Projectís Database
   When you create a new project, you must store data on the application serverís file system.
   The option to store the project data in the projectís database is no longer available.
 
2)Quality Center Dashboard
   The new built-in Dashboard module replaces the legacy standalone
   Quality Center Dashboard which is no longer available
   Quality Center now includes a built-in Dashboard module. This replaces the legacy standalone Dashboard application.
   DashBoard Gets Installed automatically
   Access to DashBoard  comes by default
   The Dashboard module includes trees for analysis items and dashboard pages.
   Each tree consists of Private and Public root folders. Under each root folder you develop separate trees. Analysis items or dashboard pages that you  create in a public folder are accessible to all users.
   Analysis items or dashboard pages that you create in a private folder are accessible only to the user who created them. Public dashboard pages can include only public graphs. Analysis items and dashboard
    pages in public folders  may show different results for different users, depending on the data hiding definitions for the user group
 
3)Version Control Integrations
  
   In a version control enabled project, you can create and manage Quality Center entities while maintaining previous versions of those entities. This includes requirements, tests, test resources, and business components.
   You check out an entity to make changes. Then you check in the entity to store the changes, and make the new version of the entity available to other users. You can view and compare previous versions of an entity,
   or check out a   previous version
  
New Features QualityCenter9.0 Quality Center9.2 Quality Center10.0
Template Projects Not available Not available Quality Center now considers test parameters in manual tests as properties of a test, instead of as part of a specific test design step.
This makes it easier to manage test parameters in manual tests, and enables the reuse of test parameters in multiple design steps.
Test parameters are now managed in a new Test Parameters tab
Risk-Based Quality
Management
Not available Business Criticality, Failure Probability

and Risk Constraints  are the three available tabs

Newly Added Tabs 

      Functional Complexity
      Risk Calculation

Release Management Not available You can use the new Releases module to help you more efficiently manage the often-challenging process of issuing application releases. In the Releases module, you organize your upcoming releases by defining a hierarchical tree of release folders. A release represents a group of changes in one or more applications that will be available for distribution at the same time. Each release can contain a number of cycles. A cycle represents a development and QA cycle based on the project timeline. Available.
 
Requirements Traceability Not available The ability to create associations between entities has been extended with the addition of requirements traceability. Requirements traceability defines a relationship between two or more requirements. Tracing requirements to other requirements helps ensure that no requirements are inadvertently overlooked during the testing process. When analyzing the impact of a change proposed in a specific requirement, the traceability links indicate other requirements that might be affected by the change. Available
Risk-Based Quality Management Not available When planning how to test your requirements, you generally do not have unlimited resources available, and are not able to fully test every requirement. You must make compromises and only partially test requirements that have low criticality to the business, or those that have only a minor risk associated with their implementation. The new risk-based quality management feature enables you to calculate at which level to test each requirement, based on the nature of the requirement and the resources you have available. You can then plan your testing strategy based on these recommendations. Available
Excel Reports Not available In addition to the existing Reports, Graphs, and Live Analysis Graphs features, you can now analyze Quality Center data using the new Excel Reports feature. Available
Shared customization Not available Not available Quality Center Premier Edition: The new cross project customization feature enables you to standardize policies and procedures across initiatives in your organization.
Version Control Not available, needs support of third party software Not available, needs support of third party software Quality Center now has fully integrated version control. You no longer need to purchase and maintain a third party version control system. Instead, the Quality Center site administrator can enable version control on a per project basis.
Sharing Libraries Not available Not available Quality Center Premier Edition: You can now reuse entities in your project, and share entities across multiple projects by creating libraries.
Baselining Not available Not available Quality Center now includes baselining functionality which enables you to create a snapshot of entities in your projects at critical stages of development.
Quality Center Dashboard Module Not available needs independent installation of QCD Not available, needs independent installation of QCD Quality Center now includes a built-in Dashboard module. This replaces the legacy standalone Dashboard Application.
Test Resources Module Not available Not available Quality Center now enables you to manage resources used by your tests. For example, suppose you work with an external testing tool that stores its tests in Quality Center. Each test uses a shared configuration file that is common to a number of tests. You therefore want a single point of maintenance for the configuration file, rather than saving separate copies of the file for each test.
Dependencies Not available Not available You can view dependencies that exist between entities such as tests,components, and test resources. When analyzing the impact of a change proposed in a specific entity, the dependency links indicate the other entities that the change might affect. You can view dependencies in the Dependencies tab.. 
Password Reset Not available Not available Previously, if users forgot their Quality Center login passwords, the site administrator assigned them a new password. Now, users can reset their passwords themselves, and create new passwords. You do this by clicking the Forgot Password link in the Quality Center Login window
Multiple Record Update Not available Not available You can now update a field value for more than one record at a time. This option is available in the following Quality Center modules: Requirements, Test Plan (grid only), and Defects.
Test Parameters Not available Not available Quality Center now considers test parameters in manual tests as properties of a test, instead of as part of a specific test design step. This makes it easier to manage test parameters in manual tests, and enables the reuse of test
parameters in multiple design steps. Test parameters are now managed in a new Test Parameters tab.
Site Configuration Parameters Newly Added Parameters                                                        SELECT_FS_OVER_DB  SHOW_REPOSITORY_OVER_DB
  VC
Newly Added parameters     

  ALLOW_MULTIPLE_VALUES
  ALLOW_REQ_COVERAGE_BY_TEST_INSTANCE
  AUTO_MAIL_USER_NOTIFICATION
  CREATE_DB_REPOSITORY_VISIBILITY
  DISABLE_CONSOLE_DEBUG_INFO
  FAVORITES_DEPTH
  LDAP_IMPORT_ATTRIBUTE_MASK
  NEWREQTYPE
  REPORT_QUERY_RECORDS_LIMIT
  REPORT_QUERY_TIMEOUT
  REQ_SHOW_NUMERATION
  RESTRICT_SERVER_FOLDERS
  SELECT_FS_OVER_DB
  SQL_QUERY_VALIDATION_ENABLED
 SQL_QUERY_VALIDATION_BLACK_LIST

 Note:What's New document(for 9.2)  says that below    variable has been  removed.                             ACCESS_WEB_DOCUMENTATION       

But this  variable still exists in 9.2

Newly Added parameters                                                                                                                                                   ALLOW_UPDATE_USER_PROPERTIES_FROM_CUSTOMIZATION
DISABLE_HTTP_COMPRESSION
 LIBRARY_BROKEN_LINKS_VERIFICATION_FUSE
 PASSWORD_RESET_DISABLE
 PASSWORD_RESET_ELAPSED_TIME
 PASSWORD_RESET_UNAVAILABLE_MESSAGE
 PASSWORD_RESET_VALID_PERIOD
 TEXT_SEARCH_TIMEOUT
 UPGRADE_EXCEPTION_FILE
 VERIFY_REPORT_FOLDER


The following parameters were removed:
CREATE_DB_REPOSITORY_VISIBILITY
SELECT_FS_OVER_DB
SHOW_REPOSITORY_OVER_DB
VC
 

Documented by:

Maruthi Sunil Vippagunta
maruthi.sunil@yahoo.com