pri·mar·i·ly (prī-mâr′ə-lē, -mĕr′-) adv
Printers and artists have different definitions for primarycolors. The traditionional primary colors that painters have used are red,yellow, and blue. Modern printing press secondary colors are magenta, yellow,and cyan. These two primary color systems obviously do not agree. and are the two primary methods for reproducing a range ofcolor.
To adequately define primary production we must first have a basic understanding of the food chain. All organisms feed off from the organisms below them on the food chain. The base, the very first level of organism has to feed on something too. These organisms create their own food through the process of photosynthesis or chemosynthesis. This is what a primary producer does, makes its own food from inorganic materials.
The Oxford English Dictionary defines primary as "Occurring or existing first in a sequence of events; belonging to the beginning or earliest stage of something; first in time."Are you sure the MySQL table has that field defined as the primary key? It sounds like you're talking about the input data having a primary key, but you need to actually define the primary key index in MySQL for the field to be recognized as the primary key.