Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I wrote multi-tenant web application in MVC2. Adding / Removing an account is as complex as adding / removing a row in a table as I opted for shared database, shared schema approach.</p> <p>This is a very good article about multi-tenant database design from MSDN: <strong><a href="http://msdn.microsoft.com/en-us/library/aa479086.aspx" rel="nofollow">Multi-Tenant Data Architecture</a></strong></p> <p>All I had to do in MVC is to set up routing properly, so the first part of the path is account name:</p> <ul> <li>www.yourdomain.com/Account1/...</li> <li>www.yourdomain.com/Account2/...</li> <li>www.yourdomain.com/Account3/...</li> </ul> <p>and I have a custom MvcHandler for looking up account for each request:</p> <pre><code>public class AccountMvcHandler : MvcHandler { public AccountModel Account { get; set; } public AccountMvcHandler(RequestContext requestContext) : base(requestContext) { } protected override IAsyncResult BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, object state) { string accountName = this.RequestContext.RouteData.GetRequiredString("account"); Account = ServiceFactory.GetService&lt;IAccountService&gt;().GetAccount(accountName); // URL doesn't contain valid account name - redirect to login page with Account Name textbox if (Account == null) httpContext.Response.Redirect(FormsAuthentication.LoginUrl); return base.BeginProcessRequest(httpContext, callback, state); } } </code></pre> <p>As it was said by Andreas Paulsson the key phrase is "custom assemblies". Why do you need 'custom assemblies' for configuration? Are you using CodeEmit? Will users upload them? I would rather think about using <strong>Windows Workflow Foundation</strong> for any client-specific business logic customisation.</p>
    singulars
    1. This table or related slice is empty.
    1. POIsolation in a Multi-tenant ASP .NET Application
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USJakub Konecki
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI actually have the tenant-specific MVC routes set up, which are working great. The purpose for the custom assemblies is that tenants must be able to customize their "instance" with custom pages and code behinds. Isolating any custom code for this purpose is key.
      singulars
      1. PO
      1. USJeff
    2. COTo further clarify, yes, users will upload the custom assemblies, which will be compiled and run in the app domain. The problem is that these assemblies need some form of isolation so as to not be able to access data from other tenants. I already have code in place that prevents the custom assemblies from making DB calls, but I'm concerned about static contexts, such as the application state or static properties/methods/fields.
      singulars
      1. PO
      1. USJeff
    3. COI've considered creating app domains dynamically for these custom assemblies, but I'd prefer something integrated, since asp .net is already managing app domains for me. Plus, I'm not sure how I'd get my custom app domain into the asp .net request lifecycle (able to issue rendered aspx pages)
      singulars
      1. PO
      1. USJeff
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload