C-Edge Technologies Interview Questions and Answers

SQL Server is a relational database management system that provides robust data storage, retrieval, and management capabilities.

• Database Design: I have experience designing normalized database schemas to ensure data integrity and reduce redundancy, such as creating tables with primary and foreign keys.

• Performance Tuning: I regularly analyze query performance using execution plans and indexing strategies, optimizin...read more

I have used annotations like @RestController, @Autowired, @RequestMapping, @Service, @Component, @Repository in Spring Boot.

• Used @RestController to define RESTful web services.

• Used @Autowired to inject dependencies.

• Used @RequestMapping to map web requests to specific handler methods.

• Used @Service to mark a class as a service component.

• Used @Component to mark a class as a Spring component.

• Used @Repository to mark a...read more

The return type of the add method depends on the specific implementation and requirements of the program.

• Return type can be int, double, void, or any other data type depending on what the method is supposed to do.

• For example, an add method for adding two integers may have a return type of int.

• If the add method is simply updating a value and not returning anything, the return type may be void.

Thread safety ensures that shared data is accessed and modified by multiple threads in a safe and consistent manner.

• Thread safety is important in multi-threaded programming to prevent race conditions and ensure data integrity.

• It can be achieved through synchronization mechanisms like locks, mutexes, and atomic operations.

• For example, using synchronized keyword in Java to protect critical sections of code from conc...read more

Exception propagation in Java refers to the process of passing an exception up the call stack until it is handled.

• When an exception occurs, Java looks for a matching catch block in the current method.

• If not found, the exception is propagated to the calling method.

• This continues until a catch block is found or the main method is reached.

• Example: If method A calls method B, and B throws an exception, A must handle i...read more

Runnable is a functional interface with a run() method, while Callable is a functional interface with a call() method that can return a result or throw an exception.

• Runnable does not return a result or throw a checked exception, while Callable can return a result or throw a checked exception.

• Callable is used in scenarios where you need to return a result or handle checked exceptions, while Runnable is used for sim...read more