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Distributed Database Systems, 1st Edition by Chhanda Ray
book

Distributed Database Systems, 1st Edition by Chhanda Ray

by Chhanda Ray
May 2024
Intermediate to advanced content levelIntermediate to advanced
325 pages
12h 2m
English
Pearson India
Content preview from Distributed Database Systems, 1st Edition by Chhanda Ray
Application for Request about reservation:
Fragmentation Transparency (Level 1):
read (PNO, RFNO);
Select TOTALSEAT into $TOTALSEAT from FLIGHT where FNO = RFNO;
If $TOTALSEAT > 0 then [if seats are available]
Select NAME, ADDRESS, PHONENO into $NAME, $ADDRESS, $PHONENO from PASSENGER where
PCODE = PNO;
insert into RESERVATION (PCODE, FNO, SEATNO) values (PCODE, FNO, $SEATNO);
if not FOUND then
read (NPCODE, NNAME, NADDRESS, NPHONENO);
insert into PASSENGER(PCODE, NAME, ADDRESS, PHONENO) values
(NPCODE, ‘NNAME’, ‘NADDRESS’, ‘NPHONENO’);
insert into RESERVATION (PCODE, FNO, SEATNO) values (NPCODE, RFNO, $SEATNO);
Location Transparency (Level 2):
read (PNO, ...
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Publisher Resources

ISBN: 9781282652521Publisher WebsitePurchase Link