In a desktop .NET application, the standard option for implementing a local relational database is to use SQL Server Compact Edition, and then of course there is the possibility to use SQLite and other third-party engines.

What are the options available to a .NET Metro-style application? SQL CE seems to be unavailable - any replacement? In fact, the entire System.Data namespace seems to be gone - so no LINQ to SQL or Entity Framework, either?

What about HTML5 IndexedDB that seems to be available to Metro HTML/JS apps - can that be used from .NET somehow?

database windows-8 microsoft-metro
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