diff --git a/source/src/main/java/one/nem/lacerta/source/database/dao/DocumentDao.java b/source/src/main/java/one/nem/lacerta/source/database/dao/DocumentDao.java
index f3a3fd2b..21e1cc2e 100644
--- a/source/src/main/java/one/nem/lacerta/source/database/dao/DocumentDao.java
+++ b/source/src/main/java/one/nem/lacerta/source/database/dao/DocumentDao.java
@@ -32,6 +32,9 @@ public interface DocumentDao {
     @Query("SELECT * FROM Document WHERE parent_id = :parentId")
     List<DocumentEntity> findByParentId(String parentId);
 
+    @Query("SELECT * FROM Document WHERE parent_id IS NULL")
+    List<DocumentEntity> findRootDocuments();
+
     @Query("SELECT * FROM Document ORDER BY created_at DESC LIMIT :limit")
     List<DocumentEntity> getRecentDocument(int limit);
 
diff --git a/source/src/main/java/one/nem/lacerta/source/database/dao/FolderDao.java b/source/src/main/java/one/nem/lacerta/source/database/dao/FolderDao.java
index af5e92d4..404b53f8 100644
--- a/source/src/main/java/one/nem/lacerta/source/database/dao/FolderDao.java
+++ b/source/src/main/java/one/nem/lacerta/source/database/dao/FolderDao.java
@@ -18,6 +18,9 @@ public interface FolderDao {
     @Query("SELECT * FROM Folder WHERE parent_id = :parentId")
     List<FolderEntity> findByParentId(String parentId);
 
+    @Query("SELECT * FROM Folder WHERE parent_id IS NULL")
+    List<FolderEntity> findRootFolders();
+
     @Insert
     void insert(FolderEntity folderEntity);