platform enhancements in Summer ’07 release | Salesforce Developers Blog

Take a look at the new features in the Summer ’07 release of
the platform.  This
screencast, for ADN members only, covers the top features in the release, including  live demonstrations of
summary roll-up fields, flexible approvals, custom report types, the new
meta-data API and the AJAX proxy. Take
an advance peek at all the new features for database services, the application
framework, Apex code and the Apex API.

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