A is a component in the computer system data hierarchy that includes content such as student id 100; course is 101, and grade a.

Field

Explanation:

A field is a component of the computer system hierarchy that includes content such as Student ID 100, Course IS 101, and Grade A field can also be defined as a grouping of characters that are used to represent a characteristic or attribute of an entity , in this case the entity being a student. In the computer system data hierarchy system we move from the field to  a record , A record is a collection of attributes of a given entity .When we have a group of related records we then come up with files and eventually get to our main source of data which is the database .It's function is to logically arrange a collection of related files for easier access and allows these files to be accessed by a number of applications .