Final answer:
Indexes in databases are divided into buckets using a hash function, which enhances search performance by allowing faster location of entries.
Step-by-step explanation:
Indexes in database systems are often divided into buckets using a hash function. When an index is created on a column or a set of columns, the database can use a hashing algorithm to assign each index entry to a bucket. Each bucket contains entries that hashed to the same value. This process enhances performance by allowing the database to quickly locate the bucket where a particular index entry resides, especially in large databases, and later proceed with a more targeted search within that bucket.