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ôáâìéãù, éóðïìøúõåíùå ÷ SQL
==================== ôáâìéãá 1: ðòïäá÷ãù ================
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snum | sname | city | comm
--------|-----------|--------------|----------
1001 | Peel | London | .12
1002 | Serres | San Jose | .13
1004 | Motika | London | .11
1007 | Rifkin | Barcelona | .15
1003 | Axelrod | New York | .10
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================== ôáâìéãá 2: úáëáúþéëé ===============
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cnum | cname | city | rating | snum
-------|------------|---------|--------|------
2001 | Hoffman | London | 100 | 1001
2002 | Giovanni | Rome | 200 | 1003
2003 | Liu | SanJose | 200 | 1002
2004 | Grass | Berlin | 300 | 1002
2006 | Clemens | London | 100 | 1001
2008 | Cisneros | SanJose | 300 | 1007
2007 | Pereira | Rome | 100 | 1004
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================== ôáâìéãá 3: ðïòñäëé ==================
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onum | amt | odate | cnum | snum
-------|-----------|-------------|------|------
3001 | 18.69 | 10/03/1990 | 2008 | 1007
3003 | 767.19 | 10/03/1990 | 2001 | 1001
3002 | 1900.10 | 10/03/1990 | 2007 | 1004
3005 | 5160.45 | 10/03/1990 | 2003 | 1002
3006 | 1098.16 | 10/03/1990 | 2008 | 1007
3009 | 1713.23 | 10/04/1990 | 2002 | 1003
3007 | 75.75 | 10/04/1990 | 2004 | 1002
3008 | 4723.00 | 10/05/1990 | 2006 | 1001
3010 | 1309.95 | 10/06/1990 | 2004 | 1002
3011 | 9891.88 | 10/06/1990 | 2006 | 1001
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