I am migrating data from an older GIS system into an SDE system with PostgreSQL as the database engine. The current system generates a unique tag for several layers, I want to re-create this behavior using sequences in the PostgreSQL database. I have it working in a single user environment, but will it work in a versioned environment? Right now the field is populated by using Postgres' nextval() function as the field's default value. When the tables are versioned do those defaults go with them?