ISchemaManagerItem CreateDesignSchema( 
   UserConnection userConnection,
   System.Guid parentSchemaUId,
   System.Guid packageUId,
   System.bool extendParent
)

Parameters

userConnection

User connection.

parentSchemaUId

Parent schema's UId.

packageUId

UId of the package where schema is created.

extendParent

Flag that indicates if created schema will be extended or inherited from parent.

Return Value

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference