Upgrading and migrating > Converting encyclopedias to current version > Encyclopedia schemas
  
Encyclopedia schemas
System Architect provides encyclopedia options, that to become enabled, require encyclopedia schemas to be changed. The sections below describe the standard schema, the workspace schema, and the Optimized XT Reader feature.
Standard schema
A standard schema is one that has not been enabled to use workspaces. By default, new encyclopedias are created with the standard schema. Furthermore, new encyclopedias on SQL Server 2005 or SQL Server 2008 are created with the Standard Schema, and are enabled with the Optimized XT Reader feature, described further down.
Workspaces schema
The workspaces schema enables you to baseline an encyclopedia and create workspaces for it. A baseline encyclopedia becomes read-only. For information on working with workspaces, see “Manage Workspaces Overview” in the SAEM for SQL Server online help.
Optimized XT Reader
Encyclopedias enabled with the Optimized XT Reader feature enables System Architect to integrate with the System Architect Publishing Engine Document Studio by making encyclopedias available as data sources for that product. This is made possible through a REST API. This feature also increases the number of concurrent users that can login to System Architect XT with the “Reader” mode.
By default, new encyclopedias you create on SQL Server 2005 or SQL Server 2008 are enabled with the Optimized XT Reader feature. SQL Server 2005 encyclopedias created with System Architect versions prior to version 11.3.1 must be converted before they can be opened.
Note To perform such conversion, you must have the db_owner database role assigned on the encyclopedia, so you can perform the XT Optimized Reader Conversion by running the System Architect Encyclopedia Manager (SAEM). A dialog informs you of this requirement and prompts you to enable the Optimized XT Reader. Click Yes to convert the encyclopedia; click No to leave the encyclopedia intact, and not open it.
See also
Converting encyclopedias to current version