Coforge Senior Software Engineer Interview Questions, Process, and Tips

Dependency injection is a design pattern used to remove hard-coded dependencies and make code more flexible and testable.

• Dependency injection involves injecting dependencies into a class rather than having the class create them itself.

• This allows for easier testing and swapping out of dependencies.

• There are three types of dependency injection: constructor injection, setter injection, and interface injection.

• Example: In...read more

Good exists or In are SQL operators used to filter data based on a list of values.

• Good exists operator checks if a subquery returns any rows, and returns true if it does.

• In operator checks if a value matches any value in a list.

• Both operators are used in the WHERE clause of a SQL query to filter data based on a list of values.

• Example: SELECT * FROM table WHERE column_name EXISTS (SELECT * FROM another_table WHERE condi...read more

app.use and app.run are methods in Express.js framework for middleware and starting the server respectively.

• app.use is used to mount middleware functions in the application's request processing pipeline.

• app.run is used to start the server and listen for incoming requests.

• Middleware functions can be used for tasks such as logging, authentication, and error handling.

• Example: app.use(express.json()) to parse incoming JSON...read more

Declaring connection string in middleware

• Connection string can be declared in appsettings.json file

• It can also be declared in environment variables

• Connection string can be injected using dependency injection

• Middleware can access connection string from IConfiguration object

Angular is a structural framework for dynamic web apps.

• Angular uses a component-based architecture

• It has a template system for rendering HTML

• It uses dependency injection for managing components

• Angular has a powerful set of built-in directives and services

• It supports two-way data binding for real-time updates