DR3 Help
 Archive Intro
 Table Descriptions
 Schema Browser
 Introduction to SQL
 Form Query User Guide
 Query Limits
 How To
 SkyServer Sites
 SkyServer Traffic Page
 Web Browsers
 Site News
 Contact Help Desk

EDREarly Data Release. The first public release of SDSS data occurred in June of 2001. This current release (DR1) includes the area present in the EDR, and more. The data has also been reprocessed with improved software. The EDR is described in an AJ paper.