Microsoft® Project Code-Named “Houston” is a lightweight and easy to use database management tool for SQL Azure databases. It is designed specifically for Web developers and other technology professionals seeking a straightforward solution to quickly develop, deploy, and manage their data-driven applications in the cloud. Project “Houston” provides a web-based database management tool for basic database management tasks like authoring and executing queries, designing and editing a database schema, and editing table data. It is now available on SQL Azure Labs
Following are few screenshots for the tool, looks really cool
Login on main page at https://manage.sqlazurelabs.com/
Management page showing all info about the database
Use New Query to fire queries
Double click table, view or stored procedures to view the design view