Overview ofADO.NET Whidbey

Wallace B. McClure

Scalable Development, Inc.

Scalable Development, Inc.Building systems today that perform tomorrow.

EVERYTHING IS BETA.

Your mileage may vary. Anything may change between now

and shipment. December CTP of Sql Server 2005. Many thing will change between now

and Beta 3.

Background

Microsoft MVP.AspInsider.Author.

.NET Experiences

PDC 2000 Build (July, 2000).Book work.Visual Studio Betas.Sql Server Betas.Production applications. “Professional Programming with

ADO.NET Version 2 using Sql Server, Oracle, and MySql.”

ADO.NET Whidbey Overview

Favorite Objects are still there.Connections.CommandsDatasets, DataTables, DataColumns, etc….

Evolutionary, not revolutionary.

What databases are supported?

Sql Server - Client. System.Data.SqlClient.

Sql Server - Server. System.Data.Sql & System.Data.SqlServer.

Oracle. System.Data.OracleClient.ODBC. System.Data.Odbc.OleDb. System.Data.OleDb.

FYI – Announced Server support for CLR Objects

IBM DB/2 8.2 – Shipping with support for .NET 1.1.

Sql Server 2005 – Ship in 2005 with support for .NET 2.0.

Oracle 10g Release 2 – Ship in 2005

New Features of ADO.NET

Asynchronous operations.MARS (Sql Server 2005 only).DataType Improvements.Connection string manager. Inside the database with Sql Server

2005.

Asynchronous Operations

BeginABC/EndABC style.Type of operations.

ExecuteNonQuery.ExecuteReader.ExecuteXmlReader.

Example.

Asynchronous Operations

Less need for managed threads.Built into .NET 2.0.Not thread safe.Yukon supports multiple commands per

connection.Specific issue with shared memory and

Sql 7 & 2k.

Multiple Active Result Sets(MARS)

Multiple open commands on a single connection.

Sql Server 2005 only.Example.

DataType Improvements

Hard to get the field information through ADO.NET 1.x.

FillSchema() method only returns basic information.

GetProviderSpecificFieldType().GetDataTypeName().Example.

Connection strings

Connection strings aren’t very object based.

SqlConnectionStringBuilder().Key/Value style.

Inside the Sql Server 2005 database with the CLR

CLR Objects.Triggers.Stored Procedures.Functions.Aggregates.User Defined Types.

System.Data.Sql & System.Data.SqlServerExample.

Other features

System.Transactions.Server enumeration.Password management.Bulk Copy.Provider Statistics.Caching support.

If you want to know more about ADO.NET Whidbey/Yukon…….

http://weblogs.asp.net/wallym.http://weblogs.asp.net/despos.http://weblogs.asp.net/angelsb.http://msdn.microsoft.com.http://www.microsoft.com/sql. “Professional ADO.NET Version 2” due

in the summer of 2005. It makes a great gift. Buy 3 or 4 for the ones you love.

Questions?

Wallace B. McClure wallym@scalabledevelopment.com. http://www.scalabledevelopment.com/ http://weblogs.asp.net/wallym 865-693-3004.

END

Scalable Development, Inc.Building systems today that perform tomorrow.