diff --git a/04-databases/blog/CommentRoutines.m b/04-databases/blog/CommentRoutines.m
new file mode 100644
index 0000000..7bf02c2
--- /dev/null
+++ b/04-databases/blog/CommentRoutines.m
@@ -0,0 +1,21 @@
+
+fetch(n,data)
+  n record
+  k data
+  i n="" q 0
+  s record=$get(^comments(n))
+  s data("description")=$piece(record,"~",1)
+  s data("id_post")=$piece(record,"~",2)
+  q 1
+
+set(n,data)
+  i n="" q 0
+  s description=$piece(data,"~",1)
+  s idPost=$piece(data,"~",2)
+  s ^comments(n)=description_"~"_idPost
+  q 1
+
+remove(n)
+  i n="" q 0
+  k ^comments(n)
+  q 1
diff --git a/04-databases/blog/DatabaseRoutines.m b/04-databases/blog/DatabaseRoutines.m
new file mode 100644
index 0000000..81749ee
--- /dev/null
+++ b/04-databases/blog/DatabaseRoutines.m
@@ -0,0 +1,6 @@
+
+drop()
+  k ^comments;
+  k ^posts;
+  k ^users;
+  q
diff --git a/04-databases/blog/Main.m b/04-databases/blog/Main.m
new file mode 100644
index 0000000..dbd280f
--- /dev/null
+++ b/04-databases/blog/Main.m
@@ -0,0 +1,46 @@
+
+; create users
+
+  s ok=$$set^UserRoutines(1,"alice~password~alice-jones@no-reply.com~Alice Jones")
+  i ok=1 d
+  . w "User successfully created!",!,!
+  e  d
+  . w "Whoops! The user could not be created.",!,!
+
+  s ok=$$set^UserRoutines(2,"bob~password~bob-smith@no-reply.com~Bob Smith")
+  i ok=1 d
+  . w "User successfully created!",!,!
+  e  d
+  . w "Whoops! The user could not be created.",!,!
+
+; create posts
+
+  s ok=$$set^PostRoutines(1,"lorem-ipsum~Lorem ipsum~Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.~1")
+  i ok=1 d
+  . w "Post successfully created!",!,!
+  e  d
+  . w "Whoops! The post could not be created.",!,!
+
+  s ok=$$set^PostRoutines(2,"excepteur-sint-occaecat~Excepteur sint occaecat~Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.~2")
+  i ok=1 d
+  . w "Post successfully created!",!,!
+  e  d
+  . w "Whoops! The post could not be created.",!,!
+
+; create comments
+
+  s ok=$$set^CommentRoutines(1,"This is awesome. Thank you.~1")
+  i ok=1 d
+  . w "Comment successfully created!",!,!
+  e  d
+  . w "Whoops! The comment could not be created.",!,!
+
+  s ok=$$set^CommentRoutines(2,".Thank you so much for sharing this.~2")
+  i ok=1 d
+  . w "Comment successfully created!",!,!
+  e  d
+  . w "Whoops! The comment could not be created.",!,!
+
+; drop database
+
+  d drop^DatabaseRoutines
diff --git a/04-databases/blog/PostRoutines.m b/04-databases/blog/PostRoutines.m
new file mode 100644
index 0000000..9c14e3c
--- /dev/null
+++ b/04-databases/blog/PostRoutines.m
@@ -0,0 +1,25 @@
+
+fetch(n,data)
+  n record
+  k data
+  i n="" q 0
+  s record=$get(^posts(n))
+  s data("slug")=$piece(record,"~",1)
+  s data("title")=$piece(record,"~",2)
+  s data("description")=$piece(record,"~",3)
+  s data("id_user")=$piece(record,"~",4)
+  q 1
+
+set(n,data)
+  i n="" q 0
+  s slug=$piece(data,"~",1)
+  s title=$piece(data,"~",2)
+  s description=$piece(data,"~",3)
+  s idUser=$piece(data,"~",4)
+  s ^posts(n)=slug_"~"_title_"~"_description_"~"_idUser
+  q 1
+
+remove(n)
+  i n="" q 0
+  k ^posts(n)
+  q 1
diff --git a/04-databases/UserRoutines.m b/04-databases/blog/UserRoutines.m
similarity index 100%
rename from 04-databases/UserRoutines.m
rename to 04-databases/blog/UserRoutines.m
diff --git a/04-databases/Crud.m b/04-databases/simple-crud/Main.m
similarity index 100%
rename from 04-databases/Crud.m
rename to 04-databases/simple-crud/Main.m
diff --git a/04-databases/simple-crud/UserRoutines.m b/04-databases/simple-crud/UserRoutines.m
new file mode 100644
index 0000000..82e71ef
--- /dev/null
+++ b/04-databases/simple-crud/UserRoutines.m
@@ -0,0 +1,25 @@
+
+fetch(n,data)
+  n record
+  k data
+  i n="" q 0
+  s record=$get(^users(n))
+  s data("username")=$piece(record,"~",1)
+  s data("password")=$piece(record,"~",2)
+  s data("email")=$piece(record,"~",3)
+  s data("fullname")=$piece(record,"~",4)
+  q 1
+
+set(n,data)
+  i n="" q 0
+  s username=$piece(data,"~",1)
+  s password=$piece(data,"~",2)
+  s email=$piece(data,"~",3)
+  s fullname=$piece(data,"~",4)
+  s ^users(n)=username_"~"_password_"~"_email_"~"_fullname
+  q 1
+
+remove(n)
+  i n="" q 0
+  k ^users(n)
+  q 1
diff --git a/README.md b/README.md
index 1bda301..ed49d06 100644
--- a/README.md
+++ b/README.md
@@ -196,7 +196,7 @@ Copy the examples into your `~/.fis-gtm/V6.3-003A_x86_64/r` folder and run:
     $data(^gtree(0,0,0,0,0)) is 0
     $data(^gtree(0)) is 0
 
-### [`Crud.m`](https://github.com/programarivm/mumps-examples/blob/master/04-databases/Crud.m)
+### [`simple-crud/Main.m`](https://github.com/programarivm/mumps-examples/blob/master/04-databases/simple-crud/Main.m)
 
     User successfully created!
 
@@ -221,7 +221,7 @@ Copy the examples into your `~/.fis-gtm/V6.3-003A_x86_64/r` folder and run:
     Email:
     Full name:
 
-  > For further details also visit [UserRoutines.m](https://github.com/programarivm/mumps-examples/blob/master/04-databases/UserRoutines.m)
+  > For further details also visit [UserRoutines.m](https://github.com/programarivm/mumps-examples/blob/master/04-databases/simple-crud/UserRoutines.m)
 
 ---