diff --git a/source/_posts/DB.md b/source/_posts/DB.md
index e212303..a1f83c9 100644
--- a/source/_posts/DB.md
+++ b/source/_posts/DB.md
@@ -3,6 +3,7 @@ title: 理解数据库系统
 date: 2024-08-20 00:09:14
 tags:
 - 数据库
+img: https://cdn.jsdelivr.net/gh/Stan370/stan370.github.io/medias/featureimages/1.png
 ---
 # Database
 数据库是一个存储数据的系统，它可以存储大量的数据，并且能够高效地检索这些数据。数据库中的数据被组织成表格的形式，这些表格称为表。表中的每一行代表一个记录，每一列代表一个字段。
diff --git a/themes/hexo-theme-matery/source/medias/featureimages/1.jpg b/themes/hexo-theme-matery/source/medias/featureimages/1.jpg
index d387e9f..9da54ab 100644
Binary files a/themes/hexo-theme-matery/source/medias/featureimages/1.jpg and b/themes/hexo-theme-matery/source/medias/featureimages/1.jpg differ
diff --git a/themes/hexo-theme-matery/source/medias/featureimages/14.jpg b/themes/hexo-theme-matery/source/medias/featureimages/14.jpg
index 0e0f3f5..ef0a765 100644
Binary files a/themes/hexo-theme-matery/source/medias/featureimages/14.jpg and b/themes/hexo-theme-matery/source/medias/featureimages/14.jpg differ
diff --git a/themes/hexo-theme-matery/source/medias/featureimages/22.jpg b/themes/hexo-theme-matery/source/medias/featureimages/22.jpg
index 18ff6ac..2f45fba 100644
Binary files a/themes/hexo-theme-matery/source/medias/featureimages/22.jpg and b/themes/hexo-theme-matery/source/medias/featureimages/22.jpg differ