(a) Describe the technique for allowing a hash file to expand and shrink dynamically. What are its advantages and disadvantages?
Explanation
Dynamic hashing is a technique used to allow hash files to expand and shrink dynamically. It uses a combination of hashing and a data structure such as a linked list or a tree to store the hash buckets. This allows the hash file to adapt to changing data sizes without having to recreate the entire hash table.
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