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BASIS DATA

BASIS DATA. 20 Query Tree (Initial Tree). 1. Narasi. Tampilkan Nomor proyek, Nomor departemen,Nama akhir pegawai, alamat dan tanggal lahir dari manajer Depertemen yang membawahi Project yang berlokasi di “Stafford”. SQL. SELECT P.PNUMBER, D.DNUMBER, E.LNAME,

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BASIS DATA

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  1. BASIS DATA 20 Query Tree (Initial Tree) 1

  2. Narasi Tampilkan Nomor proyek, Nomor departemen,Nama akhir pegawai, alamat dan tanggal lahir dari manajer Depertemen yang membawahi Project yang berlokasi di “Stafford”

  3. SQL SELECT P.PNUMBER, D.DNUMBER, E.LNAME, E.ADDRESS, E.BDATE FROM EMPLOYEE E, DEPARTEMEN D, PROJECT P WHERE P.PLOCATION = “Stafford” AND D.DNUMBER = P.DNUM AND E.SSN = D.MGRSSN

  4. Aljabar Relasi πP.PNUMBER, D.DNUMBER, E.LNAME, E.ADDRESS, E.BDATE (δP.PLOCATION = “Stafford” ^ D.DNUMBER = P.DNUM ^ E.SSN=D.MGRSSN)

  5. Initial Tree πP.PNUMBER, D.DNUMBER, E.LNAME, E.ADDRESS, E.BDATE δP.PLOCATION= “Stafford” ^ D.DNUMBER = P.DNUM ^ E.SSN=D.MGRSSN X X E P D

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