An Example Queries in SQL-3

• Clog cereal wants to license an image of Herbert in front of a sunrise:

• The thumbnail method produces a small image
• The Sunrise method returns T iff there’s a sunrise in the pic
• The Herbert method returns T iff Herbert’s in pic

select F.frameno, thumbnail(F.image), C.lease_price

from frames F, categories C

where F.category = C.cid

and Sunrise(F.image)

and Herbert(F.image);

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