Database-UML.md

 ```mermaid
 classDiagram
+    class Session
+    Session : +BIGINT[UNSIGNED] id
+    Session : +CHAR[20] commit
+    Session : +DATETIME start_date
+    Session : +DATETIME end_date
+    Session : +VARCHAR[20] hpc_system
+   
+    class Benchmark
+    Benchmark : +BIGINT[UNSIGNED] id
+    Benchmark : +VARCHAR[20] name
+    Benchmark : +BIGINT[UNSIGNED] elements
+    benchmark : +BIGINT[UNSIGNED] nodes
+
+    class Build
+    Build: +BIGINT[UNSIGNED] id
+    Build: +VARCHAR[20] name
+    Build: +VARCHAR[20] version
+    Build: +JSON options
+    
     class XP
     XP : +BIGINT[UNSIGNED] id
+    XP : +BIGINT[UNSIGNED] session
+    XP : +BIGINT[UNSIGNED] benchmark
+    XP : +BIGINT[UNSIGNED] build
     XP : +DATETIME start_date
     XP : +DATETIME end_date
-    XP : +CHAR(20) commit
-    XP : +VARCHAR(20) hpc_system
+    XP : +BIGINT[UNSIGNED] mpi
+    XP : +BIGINT[UNSIGNED] openmp
+
+    class Measure
+    Measure: +BIGINT[UNSIGNED] id
 
 ```