So I'm having trouble finding an Elm package that I can use to interface directly with a SQL database. I want write a UI in elm and then access a database to communicate with, both read and write.
Do you have any suggestions? It seems like it is possible with something like Node but I'm not entirely sure.
Elm is focused primarily at building front-end UI applications, and using it on the back-end in node is currently experimental.
If you want to write a UI application that connects to SQL server, you will most likely have to build a web server application which connects to the SQL database and exposes a JSON API that your Elm app will consume.
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Using VB.NET, I can connect to a local SQL database easily, but, trying to get more advanced graphical features, I started using SilverLight for VB.NET, and so i got this problem.
Is it possible to connect a local database, and it must be SQL, with SilverLight for VB.NET?
It must be Out Of Browser too, i'm doing a Desktop App.
If there's no really way to do it, how can i make a more beatiful system, as I don't want to make the same old windows style.
Yes, you can access a db with Silverlight. As to how, the same ways you'd do it without SL really. Personally I use EntityFramework, and create a model from my database. Then I operate on that model using the context generated.
It doesn't matter if the db is local or remote, the methods are the same - they are just connection strings after all.
I am busy developing my own application, it uses a sql server database and it is connected through an entity framework. I use store procedures to insert, update, delete, select from my database.
The app works perfect on my machine even when I publish it. But my problem comes in when I try to install the app to my friend’s computer. It crashes and does not start because it cannot connect to the database.
Is there a way to publish my app with the database, without importing all the tables, store procedures and database into my friend’s pc? I just want to make it so the user just has to install the app and it works.
Your app relies on the db to work, so if you want to put it on your friends PC then you need to make the DB available somewhere, whether it be a local copy or a copy stored on a server somewhere running SQL.
How are you storing your connection string? Is it hard coded in the app or are you utilising the app.config file? To do what you're trying to do you'll need to put the connection string into the app.config file, so you can change it depending on the installation.
either that or
if you want to run your app without data, put a demo flag or something into the app.config file. Put some code into your app to check this value, if it's true then bypass the SQL code and maybe supply some demo data which is hard coded.
Does this make sense?
You could use SQL CE, but you may find it a little more difficult to 'design' your database in it if you are more used to working in SQL Server.
Have you considered SQL Server Express as an option?
On the connection string issue, you can now get the data connection wizard that Microsoft use in Visual Studio via Nuget; this makes adding a way to dynamically configure connection strings on your clients machine much easier.
Lastly, connection strings for the entity framework are different from standard SQL connection strings. Make sure that you clearly understand the differences before you start trying to configure them programmatically. Julie Lerman's excellent book on the Entity Framework explains the differences well.
I'm a newbie and tend to do a simple iOS applications.
The mission is making an app that does the registeration for a person and then upload that data to an online server.
In detail, I want to insert, delete, update data directly to online server.
Would anyone show me what I have to do with (tool, library...)?
I have worked with SQlite to make a local database for the iPhone and it worked well, now it is about dealing with an online server.
For performing remote request there are two ways:
1) https://github.com/smhuang426/MySqueakQl - this is "basic" implementation for remote access to DB. http://www.karlkraft.com/index.php/2010/09/17/mysql-for-iphone-and-osx/ - more advanced, in articles you may some instructions how use this framework. In this case you use SQL C API and you can write your own special classes. Example: http://blog.iosplace.com/?p=30 , http://zetcode.com/tutorials/mysqlcapitutorial/ and description of C API http://dev.mysql.com/doc/refman/5.0/en/c-api-function-overview.html
2) PHP script that posted on online server, you use async ASIHTTP (or ordinary NSRequest) that send to this script, and script works directly with sql DB on tis server. Example ( iOS no communication between iPhone app and MySQL database via PHP). In this case you achieved more security, but also there some limitations like decrease of app's speed and server must supply PHP.
Good luck!
What you need is some kind of remote API available which you will use to interface the iPhone application and say, a MySQL database.
I am trying to develop a BlackBerry application that will show data from an SQL Database from a server. I was researching the new HTML 5 option for blackberry (WebWorks) and noticed that it apparently cannot connect to any server data by itself. Some links state that I would need javascript coding to obtain it. I looked into the option of PhoneGap (link here: http://phonegap.com/) and decided I'd try using HTML 5 to produce the application. I have never touched SQL databases before and I am wondering how I would connect the two; meaning how do you pull data from the server given that you are working with HTML5?
I have looked at:
Where is data stored when using an HTML 5 Web SQL Database
Process for pulling data from a sql database
among others but I am still unsure as to what to do. I would be looking to "view" the data from the server and display it on the app. It would be something of the sort:
- HomeScreen: What data would you like to view?:
- Dropdown list of categories (from the database)
- Selecting Entry in dropdown leads to available information (from the database)
Any help would be appreciated, and of course thanks in advance.
the new (and pretty awesome) features of HTML5 is happening in the browser on the client side. What you will need is a back-end on the server side doing some magic. It is true that browsers now have databases but these are located on the phone, computer etc and as I understand your question you want these data to communicate with data on your server. To move data across the web you will need to perform HTTP-requests which can easily be done through javascript and ajax. Look a bit into these technologies and make a little server-side script that gathers data from the database and send it in a structured format to the phone (JSON, XML), then make a script in javascript on the client-side that parse these data and utilise them.
Good luck!
I am an iPhone developer. For one of my clients I am supposed to access their database stored in SQL Azure.
I know that there is an Objective C SDK. I have downloaded it and ran the NetFilx example successfully. But of course my client's account is password protected. Also as of now the Objective C SDK seems to provide only read support. But I will need to write to the database too. So I guess that I will have to use REST based calls to update the database.
My problem is that I cannot figure out what will be the URL of the REST services for the SQL Azure Database and how the authentication will work. I tried searching the net but all the examples seems to show how to connect through .Net, Java or PHP (and other supported languages). Nobody seems to talk about pure REST calls.
I can successfully connect to the database using following command:
sqlcmd -UUsername#Server -PPassword -Stcp:server.database.windows.net -dDBName
If such is the connection command, can any of the Gurus out there help me figure out, what should be the URLs to access this DB through pure REST calls and how the authentication will take place.
Any help is greatly appreciated. Thanks in advance.
Pritam.
What you need is the OData interface to SQL Azure. Currently, SQL Azure only supports TDS protocal, which will require a library to use. However, if you put the OData interface in front of SQL Azure, you can call to SQL Azure via REST.
More information
http://www.odata.org/blog/got-sql-azure-then-youve-got-odata/