Oracle Interview Questions and Answers

Answering how to calculate tax liability as per Indian income tax rates and bonus apportionment while being aligned to two managers.

• To calculate tax liability, one needs to know the income tax slab rates and apply them accordingly.

• Bonus apportionment can be calculated by dividing the total bonus amount among the eligible employees based on their performance.

• When aligned to two managers, it is important to prioritize tasks and communicate effectively to avoid conflicts.

• Regular...read more

Design patterns are reusable solutions to common software problems.

• Creational patterns: Singleton, Factory, Abstract Factory

• Structural patterns: Adapter, Decorator, Facade

• Behavioral patterns: Observer, Strategy, Command

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 method overloading.

• Example: A shape class can have different subclasses like circle, square, triangle, etc. and all can be treated as shapes.

• Example: A method can take different types of objects as parameters and perform different actions based on the object type.

Unit testing in backend is a process of testing individual units or components of a software application.

• It helps in identifying and fixing bugs early in the development cycle

• It ensures that each unit of code is working as expected

• It helps in improving the overall quality of the software application

• Examples of unit testing frameworks include JUnit, NUnit, and PHPUnit

Directives in Angular are markers on a DOM element that tell AngularJS's HTML compiler ($compile) to attach a specified behavior to that DOM element.

• There are three types of directives in Angular: Component Directives, Structural Directives, and Attribute Directives.

• Component Directives are used to create reusable components that can be used throughout the application.

• Structural Directives are used to manipulate the DOM layout by adding or removing elements.

• Attribute Directiv...read more