Question

Which one is not related to DBMS ?

• A. Entity
• B. Attribute
• C. Class
• D. Row

Hint:

Think of DBMS in terms of tables: Tables represent Entities. Columns represent Attributes. Rows represent individual records. The term 'Class' belongs to the world of programming languages like C++ and Java.

Answer 1

The Correct Option is C

Step 1: Define the core concepts of a relational DBMS. Relational Database Management Systems (RDBMS) are based on the relational model. Key concepts include:

Entity: A real-world object or concept about which data is stored (e.g., a Customer, a Product). Often represented as a table.
Attribute: A property or characteristic of an entity (e.g., CustomerName, ProductPrice). Represented as a column in a table.
Row: Also known as a tuple or record, it represents a single instance of an entity (e.g., one specific customer).

Step 2: Identify the unrelated term. Class is a fundamental concept in Object-Oriented Programming (OOP). It is a blueprint for creating objects. While Object-Oriented Databases exist, "Class" is not a core concept of the standard relational model that underpins most common DBMSs.