CREATE TABLE `uniform_resource_edge` (
`graph_name` text NOT NULL,
`nature` text NOT NULL,
`node_id` text NOT NULL,
`uniform_resource_id` text NOT NULL,
`elaboration` text,
FOREIGN KEY (`graph_name`) REFERENCES `uniform_resource_graph`(`name`) ON UPDATE no action ON DELETE no action,
FOREIGN KEY (`uniform_resource_id`) REFERENCES `uniform_resource`(`uniform_resource_id`) ON UPDATE no action ON DELETE no action
)