WCF / ASMX :: Design A Web Service Layer On Top Of Db For Data Integration?
Dec 22, 2010
We're doing a data integration project between a MS Sql Server database and a Microsoft CRM system (through its web services).
We're trying to build a "service" layer on top of the database. The design of our current solution is to use web services for CRUD, with xml being the format of data.
Views are created to consolidate related tables into one entity, and we query these views, using the "SELECT * FROM someview " + "For XML" to generated xml that will be returned from our web services.
For update we're trying to use the same approach - using SQL XML to map updates views, we have "instead of" triggers defined on top of these views, and in these "instead of" triggers we update the underlying tables.
The views/triggers are generated by tools so don't be too concerned with coding efficiency here...
what do you think if we use WCF data Provider to publish a enterprise data model (essentially DTOs) ? p.s., we don't have a BL layer for now, it's all in the stored procedures!!!
What's your opinion on this / any better design?
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[URL]
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In an ASP.NET MVC3 environnement with entity framework. Should the Unit of Work point to the service layer or the repository (and then the repository point to the service layer) ?
Ive saw two example:
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Link: Entity Framework 4 CTP 4 / CTP 5 Generic Repository Pattern and Unit Testable
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* Second where the unit of work have an instance to the repository which have an instance to the service layer..
[URL]
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Imagine these layers:
PRESENTATION
|
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WEB SERVICE API (Customer.Create() is available here
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FACADE Business Object Interface - Customer.Create() signature is here
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BUSINESS Business object - Customer.Create method() is fleshed out here
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DATA ACCESS - Writes data
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