diff --git a/source/libs/tdb/src/db/tdbBtree.c b/source/libs/tdb/src/db/tdbBtree.c
index c5e7469516fdfc7bda72695389f8c80508ea44b3..5fa3782baf6fff8c3b9ae9eac27e8f36845e47de 100644
--- a/source/libs/tdb/src/db/tdbBtree.c
+++ b/source/libs/tdb/src/db/tdbBtree.c
@@ -15,6 +15,12 @@
 
 #include "tdbInt.h"
 
+#define TDB_BTREE_ROOT 0x1
+#define TDB_BTREE_LEAF 0x2
+
+#define TDB_BTREE_PAGE_IS_ROOT(flags) TDB_FLAG_HAS(flags, TDB_BTREE_ROOT)
+#define TDB_BTREE_PAGE_IS_LEAF(flags) TDB_FLAG_HAS(flags, TDB_BTREE_LEAF)
+
 struct SBTree {
   SPgno          root;
   int            keyLen;
diff --git a/source/libs/tdb/src/inc/tdbInt.h b/source/libs/tdb/src/inc/tdbInt.h
index f3b5967295fecc95fc0d707d26b3c3417c1e388b..364d1925fa31f3a757d3c7b4a0fcc68efc51ac1c 100644
--- a/source/libs/tdb/src/inc/tdbInt.h
+++ b/source/libs/tdb/src/inc/tdbInt.h
@@ -128,6 +128,11 @@ typedef int (*FKeyComparator)(const void *pKey1, int kLen1, const void *pKey2, i
 
 #define BTREE_MAX_DEPTH 20
 
+#define TDB_FLAG_HAS(flags, flag)    (((flags) & (flag)) != 0)
+#define TDB_FLAG_NO(flags, flag)     ((flags) & (flag) == 0)
+#define TDB_FLAG_ADD(flags, flag)    ((flags) |= (flag))
+#define TDB_FLAG_REMOVE(flags, flag) ((flags) &= (~(flag)))
+
 typedef struct SPager  SPager;
 typedef struct SPCache SPCache;