What is the purpose of a field in a database?

What is the purpose of a field in a database?

A database field is a single piece of information from a record. A database record is a set of fields. The Fields window displays the record-level fields that are contained in a Progeny database.

How many fundamental fields are there?

The quarks and leptons are fermions, which is why they have antimatter counterparts, and the W boson comes in two equal-and-opposite varieties (positively and negatively charged), but all told, there are 24 unique, fundamental excitations of quantum fields possible. This is where the "24 fields" idea comes from.

Why can't magnetic field lines cross?

Reason – The two magnetic field lines do not intersect each other because if they do, it means at the point of intersecting, the compass needle is showing two different directions, which are not possible.

Where is the magnetic field strongest?


What is the weakest part of a magnetic field?

The magnetic field is weakest along the surface in the middle of the side of the magnet. This is a close-up of the field at the North pole.

What is meant by magnetic field?

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. ... A permanent magnet′s magnetic field pulls on ferromagnetic materials such as iron, and attracts or repels other magnets.