I was just thinking about this: fundamentally, what is the difference between a spreadsheet file with many sheets (technically, isn't it a relational database?) and an SQL DB?<BR><BR>There has to be ...
The difference between Tier 1 and Tier 2 storage used to be intuitively obvious. Tier 1 storage arrays came packaged in a refrigerator-like box, while Tier 2 storage arrays fit neatly in 19-in. racks.
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