Update README.md

1 files changed, 4 insertions, 1 deletions

diff --git a/README.md b/README.md
index 4e6b120c..690fc570 100644
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+++ b/README.md
@@ -6,4 +6,7 @@ But still in early stage, feel free to fork or contribute to it.
 
 Thanks for your using.
 
-License under MIT.
\ No newline at end of file
+The notes are store in PostgreSQL, and I provided the schema in the hackmd_schema.sql.
+The users and sessions are store in mongoDB, which don't need schema, so just launch and connect it.
+
+License under MIT.