Final answer:
In a database, fields are grouped into columns, and each field represents a specific type of data within a table. Records consist of rows that contain all of the data for one entity, while bytes are the basic units of data storage.
Step-by-step explanation:
In a database, fields are grouped into columns. This is a basic principle in database design where each column represents a particular type of data, or a field within a table. For example, in a database table for a library, there might be columns for book titles, authors, and publication dates. Each of these columns would represent a field where specific data entries are made for each book in the library's collection.
A record, on the other hand, encompasses one full row of fields in the table, corresponding to all the data for one entity, such as a single book in the example of the library. Bytes are the basic units of data storage, and files can be considered as containers for data or a collection of related records outside the context of a database. Each record can consist of bytes or even more, depending on the data it contains.