very simple checker similar to this one:
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with sql database and admin interface where i can enter no longer available dates
7 freelancers are bidding on average $56 for this job
I am expert in SQL. I have get a certificate of oracle with 94% marks, I also give a exam in odesk that get 98% marks so I feel I am the best of this work. If I have no project but I am expert in SQL in my work.