diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index e108547f0..0afb5d2bc 100644
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -37,7 +37,8 @@ chain => {
   },
 deps => {
     cols => [qw(node nodedep msdelay cmd comments disable)],
-    keys => [qw(node)],
+    keys => [qw(node cmd)],
+    required => [qw(node cmd)],
     table_desc => 'Describes dependencies some nodes have on others.  This can be used, e.g., by rpower -d to power nodes on or off in the correct order.',
  descriptions => {
   node => 'The node name or group name.',
@@ -344,7 +345,7 @@ ppc => {
     table_desc => 'List of system p hardware: HMCs, IVMs, FSPs, BPCs.',
  descriptions => {
   node => 'The node name or group name.',
-  hcp => 'The hardware control point for this node (HMC or IVM).,
+  hcp => 'The hardware control point for this node (HMC or IVM).',
   id => 'For LPARs: the LPAR numeric id; for FSPs: the cage number; for BPAs: the frame number.',
   pprofile => 'The LPAR profile that will be used the next time the LPAR is powered on with rpower.',
   parent => 'For LPARs: the FSP/CEC; for FSPs: the BPA (if one exists).',