Visual Studio 2010and

.NET Framework 4

Training Workshop

Visual Studio 2010and

.NET Framework 4

Training Workshop

What’s New In ADO.NETEntity Framework 4

What’s New In ADO.NETEntity Framework 4

NameTitleOrganizationEmail

ObjectivesObjectives

• How has the EDM toolset been enhanced?• What alternative development styles are enabled?

• How is the EF easier to use?• How is it more fully-featured?• Does EF 4 address any issues you had with it?

Pluralization (v1)Pluralization (v1)

Pluralization (v4)Pluralization (v4)

Model-FirstModel-First

ExistingDatabase

GeneratedEntity Data

Model

DatabaseFirst (v1)

Entity DataModel

GeneratedDatabase

ModelFirst (v4)

Complex TypesComplex Types

1) 1:1 DB Mapping 2) Could get “crowded”

1) Flexibility from DB shape2) Nicely “organized”

VS.

Tooling EnhancementsTooling Enhancements

POCOPOCO

Class Definition

Scalar Property Definition

Navigation Property Definition

Everything

Lazy LoadingLazy Loading

1) Get Product

2) Access Category

Database

Get Product1) Get Product

2) Access Category

Get Category

3) Get Category

Database

Get Product

Get Category

Exp

licit

Imp

licit

Foreign KeysForeign Keys

In theory thislooks really good

In theory this alsolooks really good

This is perfect!

POCOLazy LoadingForeign Keys

POCOLazy LoadingForeign Keys

Model-Defined FunctionsModel-Defined Functions

Umm, I’d rather be using LINQ…

Entity SQLBlock

N-TierN-Tier

DatabaseWeb Service

1) Get Product

2) Make Changes

2) Update Product

Combines power of:1) DataSet2) DTOs

Model-Defined FunctionsN-TierModel-Defined FunctionsN-Tier

SummarySummary

• The EDM tooling has been enhanced…• Model-First• Complex Types

• The EF runtime is more fully featured…• POCO• Lazy Loading• Foreign Keys• Model-Defined Functions• N-Tier