diff --git a/modelgen/table.go b/modelgen/table.go
index d9b2c14e..4122fd9b 100644
--- a/modelgen/table.go
+++ b/modelgen/table.go
@@ -55,7 +55,7 @@ type (
 {{- end }}
 )
 
-const (
+var (
 {{ range  index . "Enums" }}
 {{- $e := . }}
 {{- range .Sets }}
@@ -167,6 +167,28 @@ func fieldType(tableName, columnName string, column *ovsdb.ColumnSchema, enumTyp
 		return fmt.Sprintf("map[%s]%s", AtomicType(column.TypeObj.Key.Type),
 			AtomicType(column.TypeObj.Value.Type))
 	case ovsdb.TypeSet:
+		// optional with max 1 element
+		if column.TypeObj.Min() == 0 && column.TypeObj.Max() == 1 {
+			if enumTypes && FieldEnum(tableName, columnName, column) != nil {
+				return fmt.Sprintf("*%s", enumName(tableName, columnName))
+			}
+			return fmt.Sprintf("*%s", AtomicType(column.TypeObj.Key.Type))
+		}
+		// required, max 1 element
+		if column.TypeObj.Min() == 1 && column.TypeObj.Max() == 1 {
+			if enumTypes && FieldEnum(tableName, columnName, column) != nil {
+				return enumName(tableName, columnName)
+			}
+			return AtomicType(column.TypeObj.Key.Type)
+		}
+		// use array for columns with max > 1
+		if column.TypeObj.Max() > 1 {
+			if enumTypes && FieldEnum(tableName, columnName, column) != nil {
+				return fmt.Sprintf("[%d]%s", column.TypeObj.Max(), enumName(tableName, columnName))
+			}
+			return fmt.Sprintf("[%d]%s", column.TypeObj.Max(), AtomicType(column.TypeObj.Key.Type))
+		}
+		// use a slice
 		if enumTypes && FieldEnum(tableName, columnName, column) != nil {
 			return fmt.Sprintf("[]%s", enumName(tableName, columnName))
 		}
diff --git a/modelgen/table_test.go b/modelgen/table_test.go
index 15c6684b..7d2982c9 100644
--- a/modelgen/table_test.go
+++ b/modelgen/table_test.go
@@ -58,7 +58,7 @@ type (
 	AtomicTableProtocol  string
 )
 
-const (
+var (
 	AtomicTableEventTypeEmptyLbBackends AtomicTableEventType = "empty_lb_backends"
 	AtomicTableProtocolTCP              AtomicTableProtocol  = "tcp"
 	AtomicTableProtocolUDP              AtomicTableProtocol  = "udp"
@@ -67,12 +67,12 @@ const (
 
 // AtomicTable defines an object in atomicTable table
 type AtomicTable struct {
-	UUID      string                ` + "`" + `ovsdb:"_uuid"` + "`" + `
-	EventType AtomicTableEventType  ` + "`" + `ovsdb:"event_type"` + "`" + `
-	Float     float64               ` + "`" + `ovsdb:"float"` + "`" + `
-	Int       int                   ` + "`" + `ovsdb:"int"` + "`" + `
-	Protocol  []AtomicTableProtocol ` + "`" + `ovsdb:"protocol"` + "`" + `
-	Str       string                ` + "`" + `ovsdb:"str"` + "`" + `
+	UUID      string               ` + "`" + `ovsdb:"_uuid"` + "`" + `
+	EventType AtomicTableEventType ` + "`" + `ovsdb:"event_type"` + "`" + `
+	Float     float64              ` + "`" + `ovsdb:"float"` + "`" + `
+	Int       int                  ` + "`" + `ovsdb:"int"` + "`" + `
+	Protocol  *AtomicTableProtocol ` + "`" + `ovsdb:"protocol"` + "`" + `
+	Str       string               ` + "`" + `ovsdb:"str"` + "`" + `
 }
 `,
 		},
@@ -88,12 +88,12 @@ package test
 
 // AtomicTable defines an object in atomicTable table
 type AtomicTable struct {
-	UUID      string   ` + "`" + `ovsdb:"_uuid"` + "`" + `
-	EventType string   ` + "`" + `ovsdb:"event_type"` + "`" + `
-	Float     float64  ` + "`" + `ovsdb:"float"` + "`" + `
-	Int       int      ` + "`" + `ovsdb:"int"` + "`" + `
-	Protocol  []string ` + "`" + `ovsdb:"protocol"` + "`" + `
-	Str       string   ` + "`" + `ovsdb:"str"` + "`" + `
+	UUID      string  ` + "`" + `ovsdb:"_uuid"` + "`" + `
+	EventType string  ` + "`" + `ovsdb:"event_type"` + "`" + `
+	Float     float64 ` + "`" + `ovsdb:"float"` + "`" + `
+	Int       int     ` + "`" + `ovsdb:"int"` + "`" + `
+	Protocol  *string ` + "`" + `ovsdb:"protocol"` + "`" + `
+	Str       string  ` + "`" + `ovsdb:"str"` + "`" + `
 }
 `,
 		},
@@ -118,7 +118,7 @@ type (
 	AtomicTableProtocol  string
 )
 
-const (
+var (
 	AtomicTableEventTypeEmptyLbBackends AtomicTableEventType = "empty_lb_backends"
 	AtomicTableProtocolTCP              AtomicTableProtocol  = "tcp"
 	AtomicTableProtocolUDP              AtomicTableProtocol  = "udp"
@@ -127,18 +127,18 @@ const (
 
 // AtomicTable defines an object in atomicTable table
 type AtomicTable struct {
-	UUID      string                ` + "`" + `ovsdb:"_uuid"` + "`" + `
-	EventType AtomicTableEventType  ` + "`" + `ovsdb:"event_type"` + "`" + `
-	Float     float64               ` + "`" + `ovsdb:"float"` + "`" + `
-	Int       int                   ` + "`" + `ovsdb:"int"` + "`" + `
-	Protocol  []AtomicTableProtocol ` + "`" + `ovsdb:"protocol"` + "`" + `
-	Str       string                ` + "`" + `ovsdb:"str"` + "`" + `
+	UUID      string               ` + "`" + `ovsdb:"_uuid"` + "`" + `
+	EventType AtomicTableEventType ` + "`" + `ovsdb:"event_type"` + "`" + `
+	Float     float64              ` + "`" + `ovsdb:"float"` + "`" + `
+	Int       int                  ` + "`" + `ovsdb:"int"` + "`" + `
+	Protocol  *AtomicTableProtocol ` + "`" + `ovsdb:"protocol"` + "`" + `
+	Str       string               ` + "`" + `ovsdb:"str"` + "`" + `
 
 	OtherUUID      string
 	OtherEventType string
 	OtherFloat     float64
 	OtherInt       int
-	OtherProtocol  []string
+	OtherProtocol  *string
 	OtherStr       string
 }
 `,
@@ -167,7 +167,7 @@ type (
 	AtomicTableProtocol  string
 )
 
-const (
+var (
 	AtomicTableEventTypeEmptyLbBackends AtomicTableEventType = "empty_lb_backends"
 	AtomicTableProtocolTCP              AtomicTableProtocol  = "tcp"
 	AtomicTableProtocolUDP              AtomicTableProtocol  = "udp"
@@ -176,12 +176,12 @@ const (
 
 // AtomicTable defines an object in atomicTable table
 type AtomicTable struct {
-	UUID      string                ` + "`" + `ovsdb:"_uuid"` + "`" + `
-	EventType AtomicTableEventType  ` + "`" + `ovsdb:"event_type"` + "`" + `
-	Float     float64               ` + "`" + `ovsdb:"float"` + "`" + `
-	Int       int                   ` + "`" + `ovsdb:"int"` + "`" + `
-	Protocol  []AtomicTableProtocol ` + "`" + `ovsdb:"protocol"` + "`" + `
-	Str       string                ` + "`" + `ovsdb:"str"` + "`" + `
+	UUID      string               ` + "`" + `ovsdb:"_uuid"` + "`" + `
+	EventType AtomicTableEventType ` + "`" + `ovsdb:"event_type"` + "`" + `
+	Float     float64              ` + "`" + `ovsdb:"float"` + "`" + `
+	Int       int                  ` + "`" + `ovsdb:"int"` + "`" + `
+	Protocol  *AtomicTableProtocol ` + "`" + `ovsdb:"protocol"` + "`" + `
+	Str       string               ` + "`" + `ovsdb:"str"` + "`" + `
 }
 
 func TestFunc() string {