System.Object
   C1.Data.SchemaObjects.BaseTable
      C1.Data.SchemaObjects.Table
         C1.Data.SchemaObjects.CompositeTable
         C1.Data.SchemaObjects.SimpleTable
            C1.Data.SchemaObjects.DbTable
      C1.Data.SchemaObjects.TableView
         C1.Data.SchemaObjects.CompositeDefView
   C1.Data.SchemaObjects.CacheProperties
   C1.Data.SchemaObjects.CustomProviderInfo
   C1.Data.SchemaObjects.Diagram
      C1.Data.SchemaObjects.CompositeTableDef
      C1.Data.SchemaObjects.DataSetDef
   C1.Data.SchemaObjects.Field
      C1.Data.SchemaObjects.TableField
         C1.Data.SchemaObjects.CompositeTableField
         C1.Data.SchemaObjects.DbTableField
      C1.Data.SchemaObjects.TableViewField
   C1.Data.SchemaObjects.FieldDefaults
   C1.Data.SchemaObjects.JoinCondition
   C1.Data.SchemaObjects.Relation
      C1.Data.SchemaObjects.CompositeRelation
      C1.Data.SchemaObjects.SimpleRelation
   C1.Data.SchemaObjects.Schema
   C1.Data.SchemaObjects.SqlDialectInfo
   C1.Data.SchemaObjects.ViewRelation
      C1.Data.SchemaObjects.CompositeDefRelation
   System.Collections.CollectionBase
      C1.Data.SchemaObjects.ConnectionCollection
      C1.Data.SchemaObjects.DataSetDefCollection
      C1.Data.SchemaObjects.JoinConditionCollection
      C1.Data.SchemaObjects.RelationCollection
      C1.Data.SchemaObjects.TableCollection
      C1.Data.SchemaObjects.TableFieldCollection
      C1.Data.SchemaObjects.TableViewCollection
      C1.Data.SchemaObjects.TableViewFieldCollection
      C1.Data.SchemaObjects.ViewRelationCollection
   System.MarshalByRefObject
      C1.Data.SchemaObjects.Connection
         C1.Data.SchemaObjects.C1CustomConnection
         C1.Data.SchemaObjects.C1MSOracleConnection
         C1.Data.SchemaObjects.C1OleDbConnection
         C1.Data.SchemaObjects.C1OracleConnection
         C1.Data.SchemaObjects.C1SqlServerCeConnection
         C1.Data.SchemaObjects.C1SqlServerConnection

Reference

C1.Data.2 Assembly