โครงสร้างฐานข้อมูลและการจัดการฐานข้อมูล

https://www.dropbox.com/s/v8eg8ph6vqy80h2/%E0%B9%82%E0%B8%84%E0%B8%A3%E0%B8%87%E0%B8%AA%E0%B8%A3%E0%B9%89%E0%B8%B2%E0%B8%87%E0%B8%90%E0%B8%B2%E0%B8%99%E0%B8%82%E0%B9%89%E0%B8%AD%E0%B8%A1%E0%B8%B9%E0%B8%A5%20%E0%B8%A8%E0%B8%B8%E0%B8%A0%E0%B8%99%E0%B8%B2%E0%B8%8E%20%E0%B8%AA%E0%B8%B8%E0%B8%82%E0%B8%A1%E0%B8%B2.pdf