Someone who is said to be pragmatic concentrates on what is actually in plain black and white; as the dictionary states, the facts. They will not be swayed by things that are not proven or do not really directly relate to them.
Pragmatists are said to not think too far ahead and instead concentrate on the here and now, and things that have substance rather than the big ideas of the future.
It can be argued that people who are said to be pragmatic get the most things done as they are more precise and concentrate on one task that can definitely be achieved. People who prefer to spin several plates at a time are said to be rather scattered in their approach; which can leave important sections missed.
There are arguments to both the pros and cons of a pragmatic approach but it is certainly a very useful approach in some circumstances to adopt. Many will see it as a great trait and may use it when describing themselves for new job interviews or applications.