diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 2070881..53d8955 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -1015,7 +1015,13 @@
 							  resulting in a circular dependency and a system halt. It is a form of
 							  resource contention that can occur in concurrent systems, including
 							  database management systems.
+							- Example:
 						- Cascading rollback #flashcard
+							- Cascading Rollback: a transaction (T1) causes a
+							  failure and a rollback must be performed. Other
+							  transactions dependent on T1's actions must also
+							  be rollbacked, thus causing a cascading effect.
+							- One transaction's failure causes many to fail.
 					- DONE ACID (Atomicity, Consistency, Isolation, Durability): A set of properties that guarantee the reliability and integrity of database transactions. #flashcard
 					  collapsed:: true
 						- Atomicity: :-> The property that ensures a transaction is treated as a single, indivisible unit of work. It either executes all its operations successfully or rolls back to the initial state if any operation fails.