Amazon Interview Questions and Answers

Yes, I have experience working with Oracle Forms and Reports.

• I have worked on developing and maintaining Oracle Forms and Reports applications.

• I am familiar with the Oracle Forms and Reports development environment.

• I have experience in designing and implementing user interfaces using Oracle Forms.

• I have used Oracle Reports to generate various types of reports.

• I am proficient in writing PL/SQL code to interact with the Oracle database.

• I have experience in troubleshooting and d...read more

A cursor is a database object used to retrieve and manipulate data in a result set.

• A cursor allows sequential access to the rows in a result set.

• It can be used to fetch and update data in a controlled manner.

• Cursors are important for managing large result sets and performing complex data operations.

• They provide a way to navigate through query results and perform operations on individual rows.

• Examples of cursor types include forward-only, static, dynamic, and keyset-driven cur...read more

Use URLSession to post data to a server

• Create a URL request with the server URL

• Set the request method to POST

• Add the data to the request body using Data or JSONSerialization

• Create a URLSessionDataTask with the request and resume it

MVVM is an architectural pattern used in software development that separates the user interface from the business logic.

• Model represents the data and business logic

• View displays the data and interacts with the user

• ViewModel acts as a mediator between the Model and View, handling user input and updating the Model

Design patterns are reusable solutions to common problems in software design.

• Design patterns help in creating flexible, maintainable, and scalable software.

• Examples of design patterns include Singleton, Factory, Observer, and Strategy.

• Design patterns are categorized into three groups: creational, structural, and behavioral patterns.