Convin Backend Developer Interview Questions and Answers

Indexing in databases improves query performance by allowing faster retrieval of data.

• Indexes are data structures that improve the speed of data retrieval operations on a database table.

• They work by creating a sorted list of specific columns in a table, allowing the database to quickly locate the rows that match a query.

• Examples of indexes include primary keys, unique keys, and composite indexes.

• Indexes can be created ...read more

I have worked on various projects in different organizations, showcasing my versatility and adaptability.

• Developed a customer management system for a retail company, improving efficiency and customer satisfaction.

• Implemented a data analytics platform for a marketing agency, enabling data-driven decision making.

• Collaborated on a team to create a real-time messaging application for a tech startup, enhancing communication

Different data structures like arrays, linked lists, trees, graphs, and their indexing problems and solutions.

• Arrays: indexing is O(1), but insertion/deletion at arbitrary position is O(n)

• Linked Lists: indexing is O(n), but insertion/deletion at arbitrary position is O(1)

• Trees: indexing depends on the type of tree (e.g. binary search tree, AVL tree)

• Graphs: indexing can be done using adjacency lists or matrices

• Hash Tabl...read more