This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I'm guessing number on is probably database dependent and number two certainly is. Have a look at your database documentation, there will probably be somethign in there about maximum statement size. One thing is for sure though, if you are going anywhere near a maximum you can pretty much guarentee you are doing something wrong.