23. Sample 4GL Application : Employee Database : Employees Table
 
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Employees Table
The Employees table contains one row for each employee. The key column is "ssn" (Social Security number). This table contains the following columns:
Column Name
Data Type
Nulls
ssn
i4
no
last_name
varchar(18)
no
first_name
varchar(12)
no
initial
char(1)
no
last_updated_at
date
no
last_updated_by
varchar(32)
no