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+// $URL$
+// $Id$
+
+// This is an attempt to capture
+// http://subvert-rpki.hactrn.net/docs/prague-whiteboard-2007-03-22-23:15:01.jpg
+
+// {arrowhead,arrowtail} shapes to use for database object relationships:
+//   1-  none
+//   m-  crow
+// Color code:
+//   Blue:  visible in left-right protocol
+//   Green: created on the fly
+
+digraph gsstsig_systems {
+	rotate=90;	size="11,8.5";	splines=true;	ratio=fill;
+	node		[ shape=record ];
+
+	// Objects visible in left-to-right protocol
+	node		[ color=blue ];
+	issuer		[ label="Issuer cust_id" ];
+	parent		[ label="Parent|{URL|key}" ];
+	repo		[ label="Repository|{URL|key}" ];
+	child		[ label="Child" ];
+	biz_sign	[ label="Business signing context" ];
+
+	// Objects created on the fly by the RPKI engine
+	node		[ color=green ];
+	ca		[ label="CA|{CRL #|Last issued serial #}" ];
+	child_cert	[ label="Child Certificate" ];
+	ee_cert		[ label="EE certificate|{ROA}" ];
+	ca_key_pair	[ label="CA key pair|{Latest CA certificate|Latest CRL}" ];
+
+	// One-many mappings
+	edge [ color=blue, arrowtail=none, arrowhead=crow ];
+	child -> biz_sign;
+	issuer -> child;
+	issuer -> parent;
+	parent -> biz_sign;
+	repo -> biz_sign;
+	repo -> parent;
+
+	// Many-many mappings
+	edge [ color=green, arrowtail=crow, arrowhead=crow ];
+	ca -> child;
+
+	// One-many mappings
+	edge [ color=green, arrowtail=none, arrowhead=crow ];
+	ca -> ca_key_pair;
+	child -> child_cert;
+	issuer -> ca;
+	parent -> ca;
+
+	// Weird one-many
+	edge [ color=green, arrowtail=none, arrowhead=crow, style=dashed ];
+	ca_key_pair -> child_cert;
+	ca_key_pair -> ee_cert;
+}
+
+// Local Variables:
+// compile-command: "neato -Tps2 whiteboard-object-model.dot | ps2pdf - whiteboard-object-model.pdf"
+// End: