Question
What is a characteristic feature of a dense index in a
database indexing system?Solution
A dense index is a type of index where there is a one-to-one correspondence between index entries and actual data entries in the indexed column. In other words, for every key value in the data file, there is a corresponding entry in the index. Key characteristics of a dense index include: • Complete Coverage: Every value of the indexed field in the data file is represented in the index. This means that if a value appears multiple times in the data file, there will be an index entry for each occurrence. • Direct Access: Since each value in the data file has an associated index entry, it allows for direct access to the data records. This can make searches and retrievals very efficient because the index provides a quick way to locate any specific record.
Which SOLID principle ensures that a class has only one reason to change?
Which of the following attacks can occur when a user is tricked into performing unintended actions on a trusted website without their knowledge?
Which SOLID principle emphasizes that a class should have only one reason to change?
In B+ trees, which of the following statements is FALSE?
In the context of artificial intelligence (AI), which type of learning requires labeled data to train models?
Which page replacement algorithm minimizes the number of page faults theoretically but is difficult to implement in practice?
Which SQL query will retrieve the second highest salary from an Employee table?
In the context of asymmetric encryption, which of the following is a key feature of public-private key pairs?
Given the following code snippet, which operation is performed on the binary tree to produce the output: 4, 2, 5, 1, 3 ?
class Node {Â Â Â Â Â in...Which data structure is ideal for priority-based scheduling?