Index: trunk/dbconfig/chip.md
===================================================================
--- trunk/dbconfig/chip.md	(revision 14065)
+++ trunk/dbconfig/chip.md	(revision 14167)
@@ -1,5 +1,5 @@
 chipRun METADATA
     chip_id     S64         0       # Primary Key AUTO_INCREMENT
-    exp_id      S64         64      # Primary Key fkey (exp_id) ref rawExp(exp_id)
+    exp_id      S64         64      # Key INDEX(chip_id, exp_id) fkey (exp_id) ref rawExp(exp_id)
     state       STR         64      # Key
     workdir     STR         255