Database redesign is equally difficult whether or not the database has data in it.
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Q7: In the SQL statement:
SELECT S1.CustName,S1.SalesRepNo FROM SALES
Q8: EXISTS and NOT EXISTS are actually just
Q9: In a correlated subquery,the DBMS can run
Q10: In the database redesign process,two SQL tools
Q11: There is a common trap in writing
Q13: In a correlated subquery,the DBMS must run
Q14: In a real sense,information systems and organizations
Q15: A continuous circular process of changes in
Q16: When using queries with EXISTS and NOT
Q17: Because EXISTS and NOT EXISTS are forms
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