Final answer:
The characteristics of a field, like name, size, and type, are called field properties, which are crucial in defining data structure in technology and physics.
Step-by-step explanation:
The characteristics of a field, such as name, size, and type, are called the field properties. Field properties are essential to defining how data is structured within a database or a program. These properties can include physical characteristics, or measurable traits of data, which don't involve a change in their chemical composition but are crucial for data handling and representation. Some properties, like the strength of an electric field, are determined by the number of lines per unit area which, together with the fact that field lines can never cross, makes the field unique at any point.