The registration for the BETA exam 71-451: PRO: Microsoft SQL Server 2008, Designing and Optimizing Database Solutions begins on the 29th of August. If you pass this BETA exam, the exam credit will be added to your transcript and you will not need to take the exam in its released form, and besides having contributed with Microsoft to define the final version of this exam (which will have the code 70-451 in its release form, instead of 71-451), you will get credits towards the certification Microsoft Certified IT Professional: Database Developer 2008 (MCITP), and will only have to take one more exam to achieve this level of certification: The exam 70-433: TS: Microsoft SQL Server 2008, Database Development.

Candidates are expected to have experience with writing transact SQL queries, programming the database, troubleshooting programming objects (for example, stored procedures, triggers, user-defined functions (UDFs), user-defined types (UDTs), and queries, database performance tuning and optimization, designing databases at both the conceptual and logical levels, Implementing databases at the physical level, might be involved in designing and troubleshooting the data access layer of the application, and gathering business requirements.
You can find the preparation guide for this exam in the Microsoft Learning web site:
http://www.microsoft.com/learning/exams/70-451.mspx
This BETA exam is free, as usual in all Microsoft BETA exams, and you just need to use the promotional code 14F65 when registering for the exam in order to get 100% of discount.

The registration is done through Prometric‘s web site (http://www.prometric.com/microsoft), and you can choose the testing center nearest you.
You can take the exam from September 2nd of 2008 to September 30th of 2008, but the seats are limited and usually sell out the first few days, so you should register as soon as possible.