diff --git a/lectures/figures/uml/object_collections.puml b/lectures/figures/uml/object_collections.puml
new file mode 100644
index 0000000..0edf4d1
--- /dev/null
+++ b/lectures/figures/uml/object_collections.puml
@@ -0,0 +1,17 @@
+@startuml
+skin rose
+
+object deck {
+  description = animals
+  id = 17
+  words
+}
+
+map "map: Map<String, String>" as words {
+ dog => kutya
+ cat => macska
+ fox => róka
+ lynx => hiúz
+}
+deck::words --> words
+@enduml
diff --git a/lectures/figures/uml/object_collections.svg b/lectures/figures/uml/object_collections.svg
new file mode 100644
index 0000000..a8f0d65
--- /dev/null
+++ b/lectures/figures/uml/object_collections.svg
@@ -0,0 +1 @@
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