Database-UML.md

@@ -2,5 +2,9 @@
 classDiagram
     class XP
     XP : +BIGINT[UNSIGNED] id
-    XP : +DATETIME date
+    XP : +DATETIME start_date
+    XP : +DATETIME end_date
+    XP : +CHAR(20) commit
+    XP : +VARCHAR(20) hpc_system
+    
 ```
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