diff --git a/distributeddatamgr/relational_store/include/data_asset.h b/distributeddatamgr/relational_store/include/data_asset.h
index a8bc9e16a83b3eb8ae17e0e73785b7ec72ede2f3..a784b51deea833fe86e85045ea4f988a9e05b02b 100644
--- a/distributeddatamgr/relational_store/include/data_asset.h
+++ b/distributeddatamgr/relational_store/include/data_asset.h
@@ -36,7 +36,7 @@
  * @syscap SystemCapability.DistributedDataManager.RelationalStore.Core
  * @since 11
  */
-#include <cstddef>
+#include <stddef.h>
 #include <stdint.h>
 #ifdef __cplusplus
 extern "C" {
diff --git a/distributeddatamgr/relational_store/include/oh_cursor.h b/distributeddatamgr/relational_store/include/oh_cursor.h
index 30d208ab446635eee502b76bc7b4b04ac8e1fe70..232e521a7f1c75b78136db6db8f2ef626f03183f 100644
--- a/distributeddatamgr/relational_store/include/oh_cursor.h
+++ b/distributeddatamgr/relational_store/include/oh_cursor.h
@@ -38,7 +38,7 @@
  * @since 10
  */
 
-#include <cstdint>
+#include <stdint.h>
 #include <stddef.h>
 #include <stdbool.h>
 #include "database/data/data_asset.h"
@@ -86,6 +86,15 @@ typedef enum OH_ColumnType {
     TYPE_ASSETS
 } OH_ColumnType;
 
+/**
+ * @brief Define the OH_Cursor structure type.
+ *
+ * Provides methods for accessing a database result set generated by query the database.
+ *
+ * @since 10
+ */
+typedef struct OH_Cursor OH_Cursor;
+
 /**
  * @brief Define the OH_Cursor structure type.
  *
diff --git a/distributeddatamgr/relational_store/include/oh_predicates.h b/distributeddatamgr/relational_store/include/oh_predicates.h
index 71f4964591e50d5751ab93e25c15abbecca018d9..a73410b475f6024d2d4685b33841d6327f98cb2e 100644
--- a/distributeddatamgr/relational_store/include/oh_predicates.h
+++ b/distributeddatamgr/relational_store/include/oh_predicates.h
@@ -38,7 +38,7 @@
  * @since 10
  */
 
-#include <cstdint>
+#include <stdint.h>
 #include <stddef.h>
 #include "database/rdb/oh_value_object.h"
 
@@ -62,6 +62,13 @@ typedef enum OH_OrderType {
     DESC = 1,
 } OH_OrderType;
 
+/**
+ * @brief Define the OH_Predicates structure type.
+ *
+ * @since 10
+ */
+typedef struct OH_Predicates OH_Predicates;
+
 /**
  * @brief Define the OH_Predicates structure type.
  *
diff --git a/distributeddatamgr/relational_store/include/oh_value_object.h b/distributeddatamgr/relational_store/include/oh_value_object.h
index dbe5d0d18a9598c7cf4cd15f12822f2a58141cb5..7fedc36500f35c91db3ea9aa58ef61d8fefa5762 100644
--- a/distributeddatamgr/relational_store/include/oh_value_object.h
+++ b/distributeddatamgr/relational_store/include/oh_value_object.h
@@ -38,11 +38,18 @@
  * @since 10
  */
 
-#include <cstdint>
+#include <stdint.h>
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+/**
+ * @brief Define the OH_VObject structure type.
+ *
+ * @since 10
+ */
+typedef struct OH_VObject OH_VObject;
+
 /**
  * @brief Define the OH_VObject structure type.
  *
diff --git a/distributeddatamgr/relational_store/include/oh_values_bucket.h b/distributeddatamgr/relational_store/include/oh_values_bucket.h
index db822d1de1db6a2a20fa86bdc1b60896d4098374..7c0457e9c4c6dbb965aeedabfd1ad2c6f70b7fae 100644
--- a/distributeddatamgr/relational_store/include/oh_values_bucket.h
+++ b/distributeddatamgr/relational_store/include/oh_values_bucket.h
@@ -38,12 +38,19 @@
  * @since 10
  */
 
-#include <cstdint>
+#include <stdint.h>
 #include "database/data/data_asset.h"
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+/**
+ * @brief Define the OH_VBucket structure type.
+ *
+ * @since 10
+ */
+typedef struct OH_VBucket OH_VBucket;
+
 /**
  * @brief Define the OH_VBucket structure type.
  *