diff --git a/README.md b/README.md
index 8ff8d21..3df814e 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,9 @@
 
 **Betting platform implementation using Elixir + OTP Patterns**
 
+## Clarification about ACID Transactions
+CubDB provides an API for making transactions CubDB.transaction/2. However, we simply used CubDB.get_and_update/3 that searchs for a value and then modifies it ATOMICALLY.
+
 ## How-To
 
 ```