ADO.NET Entity Framework Support
The latest ADO.NET evolution focuses on raising the level of abstraction from the
logical (relational) level to the conceptual (entity) level. For this purpose Microsoft
introduces the Entity Framework, designed to simplify data
- object conversion and embed data access queries into program code.
The Devart dotConnect product line supports the ADO.NET Entity Framework for Oracle,
MySQL, PostgreSQL, and SQLite.
Entity Framework features:
Support for LINQ to Entities and Entity SQL
dotConnect data providers offer the most complete support for LINQ to Entities and
Entity SQL.
Database-specific features:
Wide Support for Database Types
dotConnect product line offers wide support for database types including
Oracle CURSORs. Users can add support for more datatypes, e.g. PostGIS types
in PostgreSQL.
Wide Support for Stored Procedures
dotConnect product line offers wide support for stored procedures.
Wide Support for Database-specific Functions
Database specific functions can be used in LINQ to Entities and Entity SQL.
Performance:
Batch updates
Our providers support configurable batch updates, grouping several INSERT/UPDATE/DELETE
statements into one SQL block, which increases ObjectContext.SaveChanges performance
substantially, because of reducing number of server calls and producing more compact
SQL code.
Light and Optimized SQL
A number of SQL optimizations allows generating high-performant SQL. Additionally,
you may optionally disable SQL formatting to reduce SQL statement size.
Database-First
You may generate an Entity Framework model, based on an existing database, and then
update the model if the database was changed. This can be done both with Entity
Data Model Wizard and Update Model Wizard in Visual Studio 2008 or 2010
and with our own ORM model designer - Entity Developer,
which is supplied with the providers.
Model-First
You may create a model in Visual Studio 2010 Entity Model Designer and then generate
database DDL script with Create Database Wizard.
The same can be done with Entity Developer in both Visual Studio 2008 and 2010.
Code-First
You may create a set of POCO classes and set up mapping with attributes or fluent
mapping and specify the database creating/deleting and filling with initial data.
Our ADO.NET providers
support this approach completely and allow additional tweaking.
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Features
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Entity Developer
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EDM designer
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Advanced mapping support with all kinds of inheritances
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Database-First approach support with preserving manual mapping and storage changes
while updating a model from a database
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Model-First approach support with synchronization of storage part and database with
the model
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Advanced large model support splitting model into several diagrams
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Robust and easy-to-use drag 'n' drop mechanism
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Editable storage model
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Advanced CUD-mapping with stored functions support
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Function import and code generation with support for stored routines, returning
entity collections and collections of complex types
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Background design-time model validating and testing the model with Entity SQL and
LINQ to Entities queries
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Code generation with support for design-time custom attributes of model objects
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* Some of the advanced features are available only in Entity Developer
** EDM designer supports this functionality since Visual Studio
11 Beta.