We have a WinForms desktop app that connects to a remote server to pull some data. The remote server hosts a web service on a standard IIS website that queries a SQL Server database installed on the same machine. Today, if the remote server is under maintenance or not available our end-user cannot retrieve the necessary data.
Now I am requested to make this feature fault-tolerant. Here are my questions:
Should I ask for another remote server that runs the same web service and move the DB to a third remote server? So the two web services can connect to the same DB?
Should I consider moving the web service logic to the WinForms desktop app and connect directly to a remote DB paying a first-class 99.99% availability service?
Do AWS or Azure provide a ready-to-use solution that fulfills my requirements?
Is there any other option I didn't consider?
We are just about to start developing an iOS and Android app with Xamarin.
The app will include a user log in and saving/getting data from our SQL Server database.
There seem to be some different approaches, which way is best to connect securely to our database through the app?
The best approach is to wrap your SQL calls in a web service then you can invoke them in your Xamarin application. Here is a guide http://developer.xamarin.com/guides/cross-platform/Application_Fundamentals/Web_Services/
I have 2 application
1st Desktop Application – Which has database on local pc
2nd Web Application – Which has database on server
If internet is unavailable then i m storing data on desktop application and when internet is available data should be store on the server and should also update the data which was stored when internet connection is unavailable
Can you please tell me how above can be achieved
Desktop Application is C# Win form
Web Application is Asp.ne / C# Web application
Thanks in Advance
You don't say what your database technology is, but Microsoft makes the Sync Framework to solve problems like this.
I have a DIY app setup with nginx and php55. Is it possible to run a separate app dedicated to mysql and remotely connect to it? What would be the steps involved?
The workaround is to create another scalable application using any web cartridge and MySQL database. When you create a scalable application web cartridge eg PHP and database cartridge like MySQL are installed on separate gears. The MySQL DB would get installed on separate gear and you can access that in your DIY PHP55 application. But this would mean you will have to waste your one gear running web cartridge.
I'm working on my thesis project with Windows Phone 7. I'm developing an application requires store data in a database, my thesis supervisor said an Microsoft Access database is enough for this step, because I'm newbie at developing applications for Windows Phone 7.
How can i do that?
Windows Phone 7 doesn't support MS Access.
For a list of databases which are supported on WP7 see Local Sql database support for Windows phone 7
Windows Phone 7 can't have direct access to a database since standard DB connection drivers are not compatible with this platform. What you can do is built a multi-layered project, where there is a web service (easily built with WCF) that connects your Windows Phone 7 application to a local (or remote) database.
You could send request to the web service and it will send those to the database. The same service can send the response back to the app.
Unfortunately I cannot remember the details, but I saw a fairly recent presentation on integrating Sharepoint, Access and the Windows phone.
EDIT
I just found this video:
http://pocketnow.com/windows-phone/sharepoint-office-2010-on-windows-phone-7
For access 2010, IT allows one to build web databases. You need SharePoint (Enterprise), and access 2010. You also be able to use Office 365 and skydrive (not out yet).
The resulting access web database can thus be used on the windows 7 phone with the browser. In fact, I have a windows 7 phone and have tested my access applications on it.
In the following video, note how at the half way point, I swtich to using and running the access application in a web browser.
http://www.youtube.com/watch?v=AU4mH0jPntI