23. Sample 4GL Application : Employee Database : Employee_ histories Table
 
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Employee_ histories Table
The Employee_histories table contains one row for each position held by a specific employee. The key columns are "ssn" and "start_date," the date on which an employee starts at a specific position. This table contains the following columns:
Column Name
Data Type
Nulls
ssn
i4
no
start_date
date
no
position_code
i4
no
salary
money
no