Database Primary Key: A primary key is a combination of one or more column values in a table that make a row of data unique within a database table. Identification of primary keys is an important part of entity type identification. Ideally, primary keys should be. stable and.
It depends on their experience, the industry of their clients, what their special â¦ ty is, their location, etc., etc.According to the U.S. Department of Labor, the 2002 median annual earnings of salaried computer programmers was $60,290.
Salary. The BLS reports the median annual wage for computer programmers was $76,140 in 2013. The best-paid 10 percent in the field made approximately $123,490, while the bottom 10 percent made approximately $43,640.