- How do you use a SELECT command that retrieves more than one row in a PL or SQL procedure?
- Which PL or SQL command selects the next row in a cursor?
- What are the disadvantages and advantages of databa
- (a) Is a database management system hardware or software? (b) What is its use?
- A combination of several columns that together serve as the primary key is called what? (a) foreign key (b) composite key (c) candidate key.
- What is data virtualization?
- What are the disadvantages of adding indexes to a database table?
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