* Git Geography: http://github.com/alexch/mission/raw/master/git.png

* MVC: http://github.com/alexch/mission/raw/master/mvc.png

* MVC: https://www.railstutorial.org/book/demo_app#sec-mvc_in_action

* REST:

<table border=1 cellpadding=4>
<tr>
<th>DB</th>
<th>HTTP</th>
<th>REST</th>
<th>Rails</th>
<th>Notes</th>

<tr>
<td>
<td>GET
<td>/topics/new
<td>new
<td>shows the page with the "new topic" form

<tr>
<td>Create</td>
<td>POST</td>
<td>/topics</td>
<td>create</td>
<td>creates a new topic in the database</td>

<tr>
<td>Read
<td>GET
<td>/topics
<td>index
<td>shows the list of all topics

<tr>
<td>Read
<td>GET
<td>/topics/2
<td>show
<td>shows only topic number 2

<tr>
<td>Read
<td>GET
<td>/topics/2/edit
<td>edit
<td>shows the page with the "edit topic 2" form

<tr>
<td>Update
<td>PUT
<td>/topics/2
<td>update
<td>changes topic number 2

<tr>
<td>Delete
<td>DELETE
<td>/topics/2
<td>destroy
<td>deletes topic number 2

</table>