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Snippet from Wikipedia: Field

Field may refer to:

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Snippet from Wikipedia: Field (computer science)

In computer science, data that has several parts, known as a record, can be divided into fields (data fields). Relational databases arrange data as sets of database records, so called rows. Each record consists of several fields; the fields of all records form the columns. Examples of fields: name, gender, hair colour.

In object-oriented programming, a field (also called data member or member variable) is a particular piece of data encapsulated within a class or object. In the case of a regular field (also called instance variable), for each instance of the object there is an instance variable: for example, an Employee class has a Name field and there is one distinct name per employee. A static field (also called class variable) is one variable, which is shared by all instances. Fields are abstracted by properties, which allow them to be read and written as if they were fields, but these can be translated to getter and setter method calls.

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• Field (computer science), a smaller piece of data from a larger collection (e.g., database fields)
• Field-programmability, an electronic device's capability of being reprogrammed with new logic

• Field (mathematics), type of algebraic structure
  • Number field, specific type of the above algebraic structure
• Scalar field, assignment of a scalar to each point in a mathematical space
• Tensor field, assignment of a tensor to each point in a mathematical space
• Vector field, assignment of a vector to each point in a mathematical space
• Field of sets, a mathematical structure of sets in an abstract space
• Field of a binary relation, union of its domain and its range

• Field (physics), a mathematical construct for analysis of remote effects
  • Electric field, term in physics to describe the energy that surrounds electrically charged particles
  • Magnetic field, force produced by moving electric charges
  • Electromagnetic field, combination of an electric field and magnetic field
  • Gravitational field, a representation of the combined effects of remote masses on a test particle at each point