Cannot define unique indexes in mapping doc, SchemaExport cannot produce unique index DDL ----------------------------------------------------------------------------------------- Key: HHH-975 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-975 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.0.5 Environment: Hibernate 3.0.5 Solaris 10 x86 MS SQL Server (MSDE) Reporter: Nicholas Gianniotis There appears to be no may at present to model or create DDL for unique indexes on single or multiple columns. See http://forum.hibernate.org/viewtopic.php?t=947566 for more info.