Today I plan to buy the db .After the withdrawal, I call the future mater in my lab,but his cell can not be got accessed. I am a little regret ,maybe  I should call him yestoday  so I have knew if he had a db.

Now I have to put off the purchase. What I am worried about is that if I buy the db by myself, the boss will not give me the money that I pay for the db.

What I can do now is just waiting ,next monday will come to my lab, then I can make my decision .