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.
Salaries typically range from $70,000-$90,000. A Computer Systems Engineer/Architect can get a pay level between 72000 to 108000 based on tenure and industry expertise. Computer Systems Engineers/Architects can get an average pay level of Ninety Seven Thousand dollars per year.