diff --git a/src/db/ndns-db-data-demo.sql b/src/db/ndns-db-data-demo.sql
index 8564207..6567c5b 100644
--- a/src/db/ndns-db-data-demo.sql
+++ b/src/db/ndns-db-data-demo.sql
@@ -1,4 +1,7 @@
-
+/*
+sqlite3 src/db/ndns-local.db
+.read ndns-db-data-demo.sql
+*/
 delete from rrs;
 delete from rrsets;
 delete from zones;
@@ -8,33 +11,102 @@
                   (2, "/net"),
                   (3, "/net/ndnsim"),
                   (4, "/dns/google/com"),
-                  (5, "/net/ndnsim/git/doc")
+                  (5, "/net/ndnsim/git/doc"),
+                  
+                  (6, "/com"),
+                  (7, "/com/skype")
                   ;
 
 insert into rrsets (id, zone_id, label, class, type, ndndata) values
+                  /* NS of sub-domain */
+                   (4,   1,     "/net",  NULL,   "NS", NULL),
+                   (3,   2,     "/ndnsim", NULL, "NS", NULL),
+                   (7,   3,     "/git/doc", NULL, "NS", NULL),
+                   
+                    /* FH of NS (name servers) */
+                   (21,  1,     "/net/ns1", NULL, "FH", NULL),
+                   (18,  2,     "/net/ndnsim/ns1", NULL, "FH", NULL),   
+                   (19,  3,     "/net/ndnsim/git/doc/ns1", NULL, "FH", NULL),
+              
+                   /* TXT of service/app*/
                    (1,   3,     "/www", NULL, "TXT", NULL),
                    (2,   3,     "/doc", NULL, "TXT", NULL),
-                   (3,   2,     "/ndnsim", NULL, "NS", NULL),
-                   (4,   1,     "/net",  NULL,   "NS", NULL),
-                   (5,   4,     "/net",  NULL,   "NS", NULL),
                    (6,   3,     "/git/www", NULL, "TXT", NULL),
-                   (7,   3,     "/git/doc", NULL, "NS", NULL),
-                   (8,   5,     "/www", NULL, "TXT", NULL),
                    (9,   3,     "/repo/www", NULL, "TXT", NULL),
-                   (10,  3,     "/norrdata", NULL, "TXT", NULL)
+                   (8,   5,     "/www", NULL, "TXT", NULL),
+                   (10,  3,     "/norrdata", NULL, "TXT", NULL),
+           
+                   /* FH of physical hosts, which is not named by hierarchical */
+                   (25,  3,     "/net/ndnsim/www/h1",   NULL, "FH", NULL),
+                   (26,  3,     "/net/ndnsim/h1",   NULL, "FH", NULL),
+                   (27,  3,     "/net/ndnsim/h2",   NULL, "FH", NULL),
+                   (28,  5,     "/net/ndnsim/git/doc/h1", NULL, "FH", NULL),
+                   
+                   /* NDNCERT of domain */
+                   (11,  3,     "/www/dsk-1", NULL, "NDNCERT", NULL),
+                   (12,  3,     "/www/ksk-1", NULL, "NDNCERT", NULL),
+                   (13,  3,     "/dsk-1",     NULL, "NDNCERT", NULL),
+                   (14,  2,     "/ndnsim/ksk-1", NULL, "NDNCERT", NULL),
+                   (15,  2,     "/dsk-1", NULL, "NDNCERT", NULL),
+                   (16,  1,     "/net/ksk-1", NULL, "NDNCERT", NULL),
+                   (17,  1,     "/root",     NULL, "NDNCERT", NULL),
+                   
+                   /* Mobility Support for Skype (NDN rtc in the future) */
+                   (100,  1,    "/com",         NULL, "NS", NULL),
+                   (101,  6,    "/skype",   NULL, "NS", NULL),
+                   (102,  1,    "/com/ns1",     NULL, "FH", NULL),
+                   (103,  6,    "/com/skype/ns1", NULL, "FH", NULL),
+                   
+                   (105,  7,    "/shock",  NULL, "FH",   NULL),
+                   (106,  7,    "/alex",   NULL,  "FH",  NULL),
+                   (107,  7,    "/lixia",   NULL,  "FH",  NULL),
+                   (108,  7,    "/yiding",   NULL,  "FH",  NULL)
                    ;
                    
                    
 insert into rrs (id, rrset_id, ttl, rrdata) values
-                (1, 1, 3600, "/ucla"),
-                (2, 1, 8000, "/att"),
-                (3, 2, 3600, "/ucla"),
-                (4, 3, 4000, "/net/ndnsim2"),
-                (5, 4, 5000, "/net"),
-                (6, 5, 6000, "/net"),
-                (7, 3, 4000, "/net/ndnsim"),
-                (8, 6, 3000, "/net/ndnsim/git/www"),
-                (9, 7, 3000, "/net/ndnsim/git/doc"),
-                (10,8, 3000, "/net/ndnsim/git/doc/www"),
-                (11,9, 3000, "/net/ndnsim/repo/www")
+                /* NS */
+                (31, 4,  3600, "/net/ns1"),
+                (32, 3,  3600, "/net/ndnsim/ns1"),
+                (33, 7,  3600, "/net/ndnsim/git/doc/ns1"),
+                
+                /* FH of NS (name server) */
+                (20,  21, 3600, "/sprint"),
+                (21,  18, 3600, "/ucla"),
+                (22,  19, 3600, "/ucla"), 
+                
+                /* TXT of service/app */
+                (1, 1, 3600, "/net/ndnsim/www/h1"),
+                (2, 1, 8000, "/net/ndnsim/h1"),
+                (3, 2, 3600, "/net/ndnsim/www/h1"),
+                (8, 6, 3000, "/net/ndnsim/h1"),
+                (11,9, 3000, "/net/ndnsim/h2"),
+                (10,8, 3000, "/net/ndnsim/git/doc/h1"),
+                
+                /* rrdata of FH of physical hosts, rrdata is FH */
+                (25,  25,   3000, "/ucla"),
+                (26,  26,   3000, "/ucla"),
+                (27,  27,   3000, "/ucla"),
+                (28,  28,   3000, "/ucla"),
+                
+                 /* NDNCERT*/
+                (12,11,3000, "/net/ndnsim/DNS/www/dsk-1:010010101101010101"),
+                (13,12,3000, "/net/ndnsim/DNS/www/ksk-1:0101111010001111110"),
+                (14,13,3000, "/net/ndnsim/DNS/dsk-1:1010110101"),
+                (15,14,3000, "/net/DNS/ndnsim/ksk-1:0101010101010111100011010"),
+                (16,15,3000, "/net/DNS/dsk-1:01111010101036654646"),
+                (17,16,3000, "/DNS/net/ksk-1:43a13f1a3d13a"),
+                (18,17,3000, "/KEY/ROOT:44631346541aaaf"),
+                
+                /* Mobility Support for Skype */
+                (100, 100,  3000, "/com/ns1"), 
+                (101, 101,  3000, "/com/skype/ns1"),
+                (102, 102,  3000, "/bt"),
+                (103, 103,  3000, "/verizon"),
+                
+                (104, 105,  3000, "/ucla"),
+                (105, 105,  3000, "/att"),
+                (106, 106,  3000, "/ucla"),
+                (107, 107,  3000, "/ucla"),
+                (108, 108,  3000, "/ucla")
                 ;
