diff --git a/in/index.rst b/in/index.rst
index e4e5435..3b77f25 100644
--- a/in/index.rst
+++ b/in/index.rst
@@ -25,7 +25,6 @@ RTFD
 
    public/archives/index
    public/code/index
-   public/data/index
    public/desktops/index
    public/documents/index
    public/init/index
diff --git a/in/public/data/index.rst b/in/public/data/index.rst
deleted file mode 100644
index be1824c..0000000
--- a/in/public/data/index.rst
+++ /dev/null
@@ -1,8 +0,0 @@
-Data
-====
-
-.. toctree::
-   :maxdepth: 2
-
-   sql/index
-   postgresql/index
diff --git a/in/public/data/postgresql/configure.rst b/in/public/data/postgresql/configure.rst
deleted file mode 100644
index 6ee633c..0000000
--- a/in/public/data/postgresql/configure.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-*****************
-Configure service
-*****************
diff --git a/in/public/data/postgresql/create.rst b/in/public/data/postgresql/create.rst
deleted file mode 100644
index 975040d..0000000
--- a/in/public/data/postgresql/create.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-***************
-Create database
-***************
diff --git a/in/public/data/postgresql/index.rst b/in/public/data/postgresql/index.rst
deleted file mode 100644
index 9e8cae6..0000000
--- a/in/public/data/postgresql/index.rst
+++ /dev/null
@@ -1,7 +0,0 @@
-##########
-PostGreSQL
-##########
-
-.. toctree::
-   configure
-   create
diff --git a/in/public/data/sql/index.rst b/in/public/data/sql/index.rst
deleted file mode 100644
index c2ca329..0000000
--- a/in/public/data/sql/index.rst
+++ /dev/null
@@ -1,8 +0,0 @@
-###
-SQL
-###
-
-.. toctree::
-
-   syntax
-   snippets
diff --git a/in/public/data/sql/snippets.rst b/in/public/data/sql/snippets.rst
deleted file mode 100644
index 89393b1..0000000
--- a/in/public/data/sql/snippets.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-********
-Snippets
-********
diff --git a/in/public/data/sql/syntax.rst b/in/public/data/sql/syntax.rst
deleted file mode 100644
index 2c53af4..0000000
--- a/in/public/data/sql/syntax.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-******
-Syntax
-******