By John Shaw, Gary Evans
Pro ADO.NET facts providers: operating with RESTful Data is geared toward builders drawn to profiting from the REST–style information providers that ADO.NET facts prone (formerly code–named Astoria) offers. The booklet exhibits easy methods to contain ADO.NET facts providers right into a wide variety of universal environments, together with BizTalk, Ajax and Silverlight patron functions. the fabric is meant for pro builders who're happy with the .NET 3.5 Framework yet are coming to ADO.NET facts prone for the 1st time and need to appreciate how you can combine it into their very own purposes and firm strategies. The e-book is packed complete with huge real–world suggestions and workouts, making sure you stroll away with a deep figuring out of the way to take advantage of ADO.NET info companies in your most sensible virtue.
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Additional resources for ADO.NET Data Services] : Working with RESTful Data
In addition it has an extensive set of tools that can be used to change how entities are mapped to the underlying data source. An example of how to surface a data source using the Entity Framework provider is demonstrated in this chapter. , you just want to expose your database model). 1 TO 31, IS SIMILAR TO THAT OF THE %NTITY C HA P TER 2 N A D D R E S S I N G R E S T F U L A D O . 1 TO 31, designer will only generate an EMqanu]^ha8P: interface. To enable update, insert, and delete operations, you must manually implement the EQl`]p]^ha8P: interface.
There are a couple of restrictions on how entity keys can be defined: s -UST BE NONNULLABLE IMMUTABLE SIMPLE TYPE PROPERTIES SUCH AS opnejc, ejpacan, and so forth. s -UST UNIQUELY IDENTIFY AN INDIVIDUAL INSTANCE OF A RESOURCE WITHIN A RESOURCE SET If the data service is surfaced from the Entity Framework, by default the keys that are defined on the database model are taken as the data service keys. When a data service is created using CLR types, the entity key must be decorated on the entity type class definition; this can be achieved by either explicitly defining the entity key(s) or having it surfaced implicitly by naming a property so it is recognized as an identity column.
LINQ to SQL has limited mapping capabilities and unlike LINQ to Entities only works with SQL Server. However, if you do not have a big impedance mismatch between your database design and your object model and you are using SQL Server, LINQ to SQL is a simpler and therefore quicker option to use for development. NET Data Services touches so many concepts and technologies. NET Data Services and the wider enterprise. NET Data Services are devastatingly elegant. ” It does indeed feel so very simple, but it is always possible to create a bad design regardless of the technologies you are using.
ADO.NET Data Services] : Working with RESTful Data by John Shaw, Gary Evans