# Namespace OptimaJet.Workflow.PostgreSQL ## Classes - [ColumnInfo](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/ColumnInfo/) - [DbObject](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/DbObject-TEntity/) - [FileSchemePersistencePostgreSQLProvider](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/FileSchemePersistencePostgreSQLProvider/) - [PostgreSQLProvider](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/PostgreSQLProvider/) - [ProcessInstanceTree](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/ProcessInstanceTree/) - [WorkflowApprovalHistory](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowApprovalHistory/) - [WorkflowGlobalParameter](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowGlobalParameter/) - [WorkflowInbox](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowInbox/) - [WorkflowProcessInstance](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowProcessInstance/) - [WorkflowProcessInstancePersistence](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowProcessInstancePersistence/) - [WorkflowProcessInstanceStatus](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowProcessInstanceStatus/) - [WorkflowProcessScheme](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowProcessScheme/) - [WorkflowProcessTimer](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowProcessTimer/) - [WorkflowProcessTransitionHistory](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowProcessTransitionHistory/) - [WorkflowScheme](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL/WorkflowScheme/) ## Sub-namespaces - [Migrations](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL.Migrations/) - [Models](https://api.workflowengine.io/postgresql/OptimaJet.Workflow.PostgreSQL.Models/)