As it relates to algorithms for the SELECT operation, which search algorithm would you use if you wanted to retrieve every record in the file and test whether its attribute values satisfy the selection condition?

Homework Help: Questions and Answers:  As it relates to algorithms for the SELECT operation, which search algorithm would you use if you wanted to retrieve every record in the file and test whether its attribute values satisfy the selection condition?

A. Binary search
B. Using a hash key
C. Linear search (brute force algorithm)
D. Using a primary index

Answer:

First, let’s understand the question: It’s about for a search algorithm to retrieve every record in the file and check whether its attribute values meet a selection condition.

Given Options: Step by Step Answering

A. Binary Search

• Binary search is efficient for finding an item in a sorted list, but it requires the data to be sorted. Additionally, binary search is used for exact matches, not for iterating through all the records to check a condition.

B. Using a Hash Key

• Hashing is used for quick access to records based on a key value. It is not suitable for retrieving every record or for evaluating conditions on all records, as it is designed for direct access based on the hash value.

C. Linear Search (brute force algorithm)

• A linear search goes through every record one by one. This is the most suitable approach if you need to check every record to see if it meets a particular condition.

D. Using a Primary Index

• Using a primary index helps in efficient searching based on the key attribute. It is not typically used for scanning all records to check a general condition.

Final Answer:

Based on the above analysis, the correct option for retrieving every record in the file and testing if its attribute values satisfy a selection condition is:

C. Linear search (brute force algorithm).

The linear search, while not the most efficient for finding specific records, is the only option that ensures we will examine every record in the file to test it against the selection condition. This aligns perfectly with the requirement stated in the question.

Learn More: Homework Help

Q. Information can be digitized and transmitted over fiber-optic cables because of recent advances in technology. Which ethical obligation of this new capability is now being realized?

Q. Which of the following acts on behalf of people in the physical world in a way that complements human abilities?

Q. Which level of AI refers to machines that can perform any intellectual task that a human can?

Q. Which areas should students who practice netiquette pay attention to? Check all that apply.

Q. Students who interact online with others from different cultures should remember that?

Q. You’re working for an employer who wants to learn from social media what customers say about her products and services. Which of the following is the best reason to support moving to an AI system?