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. Computer engineers made $103,980 per year as of May 2012, according to the BLS. The lowest earners received less than $63,970. The highest-paid professionals made more than $150,130. Computer engineers made more than the average $90,960 that engineers in all specialties earned.In fact, only specialists in petroleum, aerospace and nuclear science collected higher wages than those in computers.he lowest earners received less than $63,970. The highest-paid professionals made more than $150,130. Computer engineers made more than the average $90,960 that engineers in all specialties earned. In fact, only specialists in petroleum, aerospace and nuclear science collected higher wages than those in computers.