Each attribute of the Customers scheme is
assigned a value from its domain:
- Customer first name is assigned the value "Tom", from the domain of people's first names.
- Customer last name is assigned the value "Jewett", from the domain of people's last names.
- Customer phone is assigned the value "714-555-1212", from the domain valid telephone numbers.
- Customer street is assigned the value "10200 Slater", from the domain of street addresses.
- Customer zip code is assigned the value "92708",
from the domain of zip codes designated by the United States Postal Service.
Each of the assignments results in a data cell of the row or tuple.
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