diff --git a/source/src/main/java/one/nem/lacerta/source/database/dao/ToxiDocumentDao.java b/source/src/main/java/one/nem/lacerta/source/database/dao/ToxiDocumentDao.java
index ace23c69..201a5d37 100644
--- a/source/src/main/java/one/nem/lacerta/source/database/dao/ToxiDocumentDao.java
+++ b/source/src/main/java/one/nem/lacerta/source/database/dao/ToxiDocumentDao.java
@@ -1,7 +1,35 @@
 package one.nem.lacerta.source.database.dao;
 
 import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.Query;
+import androidx.room.Update;
+
+import java.util.List;
+
+import one.nem.lacerta.source.database.entity.ToxiDocumentEntity;
 
 @Dao
 public interface ToxiDocumentDao {
+
+    @Query("SELECT * FROM toxi_document WHERE parent_document_id = :parentId AND is_active = 1 ORDER BY `order` ASC")
+    List<ToxiDocumentEntity> findByParentId(String parentId);
+
+    @Insert
+    void insert(ToxiDocumentEntity toxiDocument);
+
+    @Insert
+    void insertAll(ToxiDocumentEntity... toxiDocuments);
+
+    @Update
+    void update(ToxiDocumentEntity toxiDocument);
+
+    @Update
+    void updateAll(ToxiDocumentEntity... toxiDocuments);
+
+    @Query("DELETE FROM toxi_document WHERE parent_document_id = :parentId")
+    void deleteByParentId(String parentId);
+
+    @Query("DELETE FROM toxi_document WHERE parent_document_id = :parentId AND child_document_id = :childId")
+    void deleteByParentIdAndChildId(String parentId, String childId);
 }