diff --git a/graph/readData.drawio.svg b/graph/readData.drawio.svg
new file mode 100644
index 0000000..b6de3dd
--- /dev/null
+++ b/graph/readData.drawio.svg
@@ -0,0 +1,102 @@
+
\ No newline at end of file
diff --git a/graph/saveData.drawio.svg b/graph/saveData.drawio.svg
new file mode 100644
index 0000000..0af3f30
--- /dev/null
+++ b/graph/saveData.drawio.svg
@@ -0,0 +1,152 @@
+
\ No newline at end of file
diff --git a/graph/save_data.drawio.svg b/graph/save_data.drawio.svg
new file mode 100644
index 0000000..e69de29