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C20.0046: Database Management Systems Lecture #1 - page 6 / 40

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M.P. Johnson, DBMS, Stern/NYU, Sp2004

6

Databases are everywhere

Example: Ordering a pizza

Databases involved?

1.

Pizza Hut’s DB

stores previous orders by customer

stores previous credit cards used

2.

Credit card records

huge databases of (attempted) purchases

location, date, amount, parties

3.

phone company’s records

Local Usage Details (“Pull his LUDs, Lenny.”)

4.

Caller ID

ensures reported address matches destination

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