links for 2008-04-23

• explain-diagram.pdf (application/pdf Object)
  Syntax: EXPLAIN ;
  (tags: sql cheatsheet)
• xml.lt: Blog: Calculating distance in SQL
  (tags: math sql)
• scx-xx: Samsung SCX-4200 Scanner GPL driver
  (tags: hardware drivers linux opensource)
• Scanners not supported by SANE – Samsung SCX-4725FN
  (tags: hardware drivers linux)