Final answer:
In relational databases, each column of a table represents a field, which is a specific piece of data stored for each record.
Step-by-step explanation:
In the context of relational databases, the tables consist of rows and columns, where each column represents a field in the file. A field can be thought of as a specific piece of data that is stored for each record in the table. For example, in a database table for a library, each row might represent a different book, while the columns could include fields such as 'Title,' 'Author,' and 'ISBN'.