IoT Embedded Developer Interview Questions and Answers

SQL is not a programming language, but it has its own syntax. Some of the languages used in SQL are DDL, DML, DCL, and TCL.

• SQL is not a programming language, but it has its own syntax

• DDL (Data Definition Language) is used to define the database schema

• DML (Data Manipulation Language) is used to manipulate data in the database

• DCL (Data Control Language) is used to control access to the database

• TCL (Transaction Control Language) is used to manage transactions in the database

Polymorphism is the ability of an object to take on many forms.

• It allows objects of different classes to be treated as if they were objects of the same class.

• It is achieved through method overriding and/or method overloading.

• Example: A parent class Animal can have child classes like Dog, Cat, and Bird, each with their own unique implementation of the method 'makeSound'.