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.
The reward for four years of college effort is a six-figure 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.he level of education determines the salaries of computer engineers, according to a report by Georgetown University.. As of May 2011, undergraduate degrees in computer engineering produced median annual salaries of $62,000, with the 25th percentile making $55,000 and the 75th percentile receiving $100,000.