diff --git a/rocksdb.go b/rocksdb.go
index 37573e7..55503aa 100644
--- a/rocksdb.go
+++ b/rocksdb.go
@@ -29,11 +29,13 @@ func init() {
 }
 
 func NewEasyDataBase() *EasyDataBase {
+
 	edb := &EasyDataBase{}
 	db, cfs := OpenDataBase()
 	edb.DB = db
 	edb.CFS = cfs
 	return edb
+
 }
 
 type EasyDataBase struct {
@@ -51,9 +53,11 @@ type Metadata struct {
 }
 
 type Field struct {
-	Name     string
-	Type     int
-	ID       int
+	Key string
+
+	ValueType int
+	ID        int
+
 	IsIndex  bool
 	IsUnique bool
 }
@@ -82,7 +86,8 @@ func CreateTable(name string, field []*Field) {
 
 }
 
-// {tableid(2)}{fieldid(2)}{value}{indexid(8)} = {rowid(8)} {rowid} = {values}
+// gson
+// OpenDataBase (cf-key.{tableid(2)}{fieldid(2)}) {value}{indexid(6)} = {rowid(6)} (cf-row.{tableid(2)} {row-sharding-id}){rowid(6)} = {values}
 func OpenDataBase() (*gorocksdb.DB, []*gorocksdb.ColumnFamilyHandle) {
 
 	bbto := gorocksdb.NewDefaultBlockBasedTableOptions()