Oracle Staff Consultant Interview Questions and Answers

Code to extract non-alphabetic characters from a string

• Iterate through each character in the string

• Check if the character is not in the range of 'A' to 'Z' and 'a' to 'z'

• Add the non-alphabetic character to a separate array of strings

Dependency injection is a design pattern where components are given their dependencies rather than creating them internally.

• Dependencies are injected into a component through constructor injection, setter injection, or interface injection.

• This allows for easier testing, flexibility, and reusability of components.

• Common frameworks for dependency injection include Spring Framework for Java and Angular for TypeScript.

• Example: In Spring Framework, dependencies are defined in a co...read more

A cursor is a database object used to retrieve data from a result set one row at a time.

• Used to fetch and manipulate data row by row

• Improves performance by reducing memory usage

• Can be static, dynamic, forward-only, etc.

• Examples: FETCH, OPEN, CLOSE

Right join includes all records from the right table and matching records from the left table, while left join includes all records from the left table and matching records from the right table.

• Right join keeps all records from the right table, even if there are no matches in the left table.

• Left join keeps all records from the left table, even if there are no matches in the right table.

• Example: In a right join between tables A and B, all records from table B will be included ...read more

REST API status codes indicate the outcome of an HTTP request.

• 200 - OK: Request was successful

• 404 - Not Found: Resource not found

• 500 - Internal Server Error: Server error occurred

Our DevOps pipeline automates the software delivery process, from code commit to production deployment.

• Continuous Integration (CI) - Code is automatically built and tested whenever changes are made.

• Continuous Deployment (CD) - Changes that pass CI are automatically deployed to production.

• Infrastructure as Code (IaC) - Infrastructure is defined in code and managed through version control.

• Automated Testing - Various types of tests are run automatically to ensure code quality.

• Mo...read more