Question: 3. Consider the following table and FDs ACTIVITY (customerid, fname,lname,address,zip,status,part……

3. Consider the following table and FDs ACTIVITY (customerid, fname,lname,address,zip,status,partid,date,price, quantity,color,material) customerid -> fname,lname.address address → zip zipstatus partid price,material customerid.partid - date,quantity For each of the following decompositions, determine (i) if lossless join holds; (ii the normal forms of each table in the decomposition (a) CUST(customerid,fname,lname,address), CUSTADD(address,zip), CUSZIP(zip.status) PART (partid,price,material), BUY(customerid.partid,date,quantity) (b) CUST(customerid,fname,lname,address,zip.status), PART (partid,price,material.quantity) BUY(customerid.partid,date)

3. Consider the following table and FDs ACTIVITY (customerid, fname,lname,address,zip,status,partid,date,price, quantity,color,material) customerid -> fname,lname.address address → zip zipstatus partid price,material customerid.partid – date,quantity For each of the following decompositions, determine (i) if lossless join holds; (ii the normal forms of each table in the decomposition (a) CUST(customerid,fname,lname,address), CUSTADD(address,zip), CUSZIP(zip.status) PART (partid,price,material), BUY(customerid.partid,date,quantity) (b) CUST(customerid,fname,lname,address,zip.status), PART (partid,price,material.quantity) BUY(customerid.partid,date)

Expert Answer

answers

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