What are the components of data model in [DBMS] Relational Database Management System?

There are five main components of data model in RDBMS

Fields

Fields are the attributed of the records.
It is also called tuple of the attributes and properties or features.
Fields shows the characteristics of the object such as name, age, gender, address etc.
It contains also primary attribute or auto number id.

Records

Records are tuple or rows in the database.
It shows all the data of the object inserted in the rows.
It is also collection of the attributes, properties or fields.

Files

Files are the collections of the records.
It shows the related records in the file data.
It is also collections and combinations of the tuples and attributes.

Databases

The database is the collection of related files.
It is also a group of files which is making relation to each other.

Key field

Key fields also called key attribute in the database of relation.
There are some key attributes you can apply on the relation database such as primary key, composite key, super key, foreign key, secondary key and candidate key.
The record can uniquely identified by the primary key such as auto number id.

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