Podcast
Questions and Answers
What is the basic difference between ordered indices and hash indices?
What is the basic difference between ordered indices and hash indices?
- Ordered indices store search keys in sorted order, while hash indices use a hash function to distribute search keys across buckets (correct)
- Ordered indices support efficient insertion time, while hash indices support efficient deletion time
- Ordered indices have higher space overhead compared to hash indices, while hash indices have lower access time
- Ordered indices use a hash function to distribute search keys across buckets, while hash indices store search keys in sorted order
What is a clustering index in the context of ordered indices?
What is a clustering index in the context of ordered indices?
- A clustering index specifies the sequential order of the file and is also called a primary index (correct)
- A clustering index has lower space overhead compared to other types of indices
- A clustering index is used to distribute search keys across buckets using a hash function
- A clustering index is used to efficiently access records with a specified value in the attribute
What is the purpose of an index file in the context of database management?
What is the purpose of an index file in the context of database management?
- To ensure data integrity and consistency in the database
- To facilitate concurrent access to the database by multiple users
- To speed up access to desired data by providing a lookup structure based on search keys (correct)
- To store the original data in a more compact and efficient manner
What is the key feature of hash indices in distributing search keys across buckets?
What is the key feature of hash indices in distributing search keys across buckets?
What access type is efficiently supported by ordered indices?
What access type is efficiently supported by ordered indices?
What is the key difference between ordered indices and hash indices?
What is the key difference between ordered indices and hash indices?
What is the purpose of an index file in the context of database management?
What is the purpose of an index file in the context of database management?
What is a clustering index in the context of ordered indices?
What is a clustering index in the context of ordered indices?
What access type is efficiently supported by ordered indices?
What access type is efficiently supported by ordered indices?
What is the key feature of hash indices in distributing search keys across buckets?
What is the key feature of hash indices in distributing search keys across buckets?
Flashcards are hidden until you start studying
