C# – Dynamic entity in EF1/change model in runtime/add property dynamicaly

You can just put the IP address as the server name:

server {
    listen 80;
    server_name 192.168.1.21;
    ...
}

You may also want to change the configuration to only listen on the specified IP address:

server {
    listen 192.168.1.21:80;
    server_name 192.168.1.21;
    ...
}

The following is from the docs: http://nginx.org/en/docs/http/server_names.html

If someone makes a request using an IP address instead of a server name, the “Host” request header field will contain the IP address and the request can be handled using the IP address as the server name:

server {
    listen       80;
    server_name  example.org
                 www.example.org
                 ""
                 192.168.1.1
                 ;
    ...
}

Yup - it's not that straightforward.

Here's what you do:

1 - Right click on the designer, Add -> Association

2 - Setup the association and cardinalities (People *..1 Gender, People *..1 Race)

3 - Go into the Model Browser -> Associations

4 - Right click on your newly created associations, click Properties

5 - Here you need to setup the endpoints for the key and cascade options. Make sure you get the endpoints correct. You can also setup a referential constraint here for your implicit navigational property.

6 - Map the navigational property to the relevant tables/fields.

7 - Validate your model, cross your fingers.

Hope this helps.