field
Table of Contents
Field
Return to Database glossary, Programming glossary
- Snippet from Wikipedia: Field (computer science)
In data hierarchy, a field (data field) is a variable in a record. A record, also known as a data structure, allows logically related data to be identified by a single name. Identifying related data as a single group is central to the construction of understandable computer programs. The individual fields in a record may be accessed by name, just like any variable in a computer program.
Each field in a record has two components. One component is the field's datatype declaration. The other component is the field's identifier.
Science, technology, and mathematics
Computing
- 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
Mathematics
- 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
Physics
- 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
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field.txt · Last modified: 2024/05/01 04:41 by 127.0.0.1