diff --git a/doc/services-flake/clickhouse.md b/doc/services-flake/clickhouse.md
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@@ -1,5 +1,7 @@
 # Clickhouse
 
+ClickHouse is an open-source column-oriented DBMS (columnar database management system) for online analytical processing (OLAP) that allows users to generate analytical reports using SQL queries in real-time.
+
 ## Getting Started
 
 ```nix