Practice smart by starting with easier problems to build confidence, recognizing common coding patterns, and managing your ...

Abstract: Practical SQL exercises are important for database course learning and teaching. However, lots of existing database online SQL test platform requires complex environmental construction and ...

Getting good at SQL for interviews can feel like a puzzle. You know the basics, but putting them together in a way that impresses people is another thing entirely. Luckily, there are great tools out ...

Abstract: Recent research explores how sustained operation impacts the performance of relational database systems through the lens of software aging and the critical role of proactive monitoring and ...

Add a description, image, and links to the hackerrank-sql-certification topic page so that developers can more easily learn about it.

Test cricket can be a daunting spectacle for the unfamiliar: a vast field, two sets of wickets and up to five days of play in a single match. But it is also beautiful; a prolonged battle unlike ...

HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses, where developers compete by trying to program according to provided specifications.