Description: Index range scanning is a method used in databases to retrieve specific rows by scanning a defined range of an index. This approach allows database management systems (DBMS) to access data more efficiently, as indexes are structures that enhance the speed of information retrieval. By scanning an index range, the DBMS can quickly locate rows that meet certain criteria, avoiding the need to review every row in the entire table. This method is particularly useful in queries involving range conditions, such as searching for values within a specific interval. The implementation of index range scanning can vary depending on the type of index used, such as B-trees or hash indexes, each with its own characteristics and advantages. Overall, this method is essential for optimizing query performance in large and complex databases, enabling developers and database administrators to improve the efficiency of their applications and systems.
