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Pause and reflect

Why learn relational databases when I know Excel?

1. Data integrity

   • Databases force every value in a particular field to be one data type

2. Volume, volume, volume...

   • Does the thought of working with a 98,000-row Excel spreadsheet make you queasy? What about 5 million rows?

3. Working with multiple related data sets

   • Is anyone not doing this???

4. Asking detailed questions about your data

5. Connecting your data

   • Databases are ready to plug into other applications

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