Tuesday, 18 November 2008

The “Grab a book” meme

  • Grab the nearest book.
  • Open it to page 56.
  • Find the fifth sentence.
  • Post the text of the sentence in your journal along with these instructions.
  • Don’t dig for your favorite book, the cool book, or the intellectual one: pick the CLOSEST.
Ok ...

"However, if F is itself weak, then some or all of the key attributes of F supplied to E will be key attributes of one or more entity sets G to which F is connected by a supporting relationship"

This is from "Database Systems" by Garcia-Molina, Ullman & Widom which just happened to be lying at my left elbow on my desk. Weak entity sets are doubtless terribly interesting to people with a thing about relational data models, but as they bore the crap out of me I'm not going to even attempt either to understand or explain the above sentence.