Thank you for all of your advices. I think you're right. I should be more realistic. There are so many work to do if I want to do some work on Flash disk. It's too difficult to complete the task only in a summer. Obviously, It's not an appropriate project idea for GSoC anyway. Maybe I'll do it in the future after I've done enough work according to my theis work.
So, I finally decide to focus on the project idea of improving hash index now. It's more valuable , and also challenging. Any suggestion about the project idea of improving hash index? -- Have a good day;-) Best Regards, Xiao Meng ━━━━━━━━━━━━━━━━━━━━━━━━━ Data and Knowledge Engineering Research Center,CS&T Harbin Institute of Technology, Harbin, Heilongjiang, China Gtalk: [EMAIL PROTECTED] MSN: [EMAIL PROTECTED] Blog: http://xiaomeng.yo2.cn -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers