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08 Jan, 2025
Top SQL Server Interview Questions and Answers (2025)
The ROW_NUMBER() function in SQL is a window function that assigns a unique sequential integer to rows within a result set. The numbering starts at 1 for the first row and increments by 1 for each subsequent row in the specified order. It is typically used to assign a rank or row number to rows in a result set based on a particular order.
08 Jan, 2025
Top SQL Interview Questions and Answers
An index in SQL is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional space and time spent on updates, inserts, and deletes. Indexes are used to quickly locate and access data without having to scan the entire table. They are particularly useful for improving query performance, especially when dealing with large datasets.
07 Jan, 2025
Array Interview Questions (Plus Sample Answers)
A dynamic array is an array that automatically resizes itself when it runs out of space. It typically starts with a fixed-size array and, when it exceeds its capacity, creates a new larger array and copies the elements from the old array to the new one. This ensures that the array can grow as needed while maintaining an efficient allocation of memory.
07 Jan, 2025
Array Interview Questions
An array is a data structure used to store multiple values in a single variable, which can be of the same or different types (depending on the programming language). Arrays are commonly used to organize data, store collections of items, and facilitate operations on a series of elements (such as looping through them, searching, or sorting).
07 Jan, 2025
C Interview Questions and Answers(2025)
In C, error handling is typically done through a combination of return codes, error messages, and sometimes, specialized error-handling functions. C does not provide built-in exceptions like higher-level languages, so error handling in C is generally done in a more manual way. Below are several common techniques for handling errors in C:
07 Jan, 2025
C Programming Interview Questions
A function pointer in C is a pointer that points to a function instead of pointing to a variable. It allows you to store the address of a function and call it indirectly through the pointer. This is useful when you want to pass functions as arguments to other functions, implement callbacks, or handle dynamic function selection at runtime.
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