hi all,
working out the web-server:

have to choose the mechanism of interaction between server (with web-address) and client (with dynamic ip).

There is database (DB) which located in the client. This DB has to be analysed in the server every minute, then server sends some info (a couple of bytes to the client).

In order to provide this I need to create the mechanism of interaction between server and the client. How I imagine it:

1. The DB is located on the server and on the client.
2. If some changes has occurred on the client DB than it has to be analysed by server.
2.1. Client sends to the server sql requests in order to change DB on the server. Server analyses it and sends the respond (a couple of bytes) back (to the client).

There are some mechanisms for server-client interaction like Qt SOAP component, there is also QTcpSocket + QByteArray mechanism of interaction and some others.

My question:
Which mechanism has to be chosen for my purpose if I need the reliability and the speed of the sql-requests transformation to the server?

The quantity of clients is 10.

Qt 4.5.2, Linux