Index: database.sql
==================================================================
--- database.sql
+++ database.sql
@@ -150,13 +150,13 @@
 	id_site serial,
 	site text[] NOT NULL
 );
 
 ALTER TABLE ONLY site
-	ADD CONSTRAINT id_site PRIMARY KEY (id_site);
+	ADD CONSTRAINT site_pkey PRIMARY KEY (id_site);
 
-CREATE UNIQUE INDEX site_s ON site (usort(site));
+CREATE UNIQUE INDEX site_u ON site (usort(site));
 
 CREATE INDEX site_g ON site USING gin (site);
 
 -- table to hold tag combinations
 CREATE TABLE tag (
@@ -163,13 +163,13 @@
 	id_tag serial,
 	tag text[] NOT NULL
 );
 
 ALTER TABLE ONLY tag
-	ADD CONSTRAINT tag_id PRIMARY KEY (id_tag);
+	ADD CONSTRAINT tag_pkey PRIMARY KEY (id_tag);
 
-CREATE UNIQUE INDEX tag_s ON tag (usort(tag));
+CREATE UNIQUE INDEX tag_u ON tag (usort(tag));
 
 CREATE INDEX tag_g ON tag USING gin (tag);
 
 -- table to hold tag - site links
 CREATE TABLE urls (