This is a tough question. I’m not sure if I’ll get it right but I’ll try.
Data structures used for file directories typically have a hierarchical tree structure, referred to as a directory structure. The tree has a root directory, and every file in that system has a unique path.
The simplest method of implementing a directory is to use a linear list of file names with pointers to the data blocks. But another way that you can format a file directory is by using a hash table. With this method, the linear list stores the directory entries, but a hash data structure is also used. The hash table takes a value computed from the file name and return the pointer to the file name any linear list.
So I think it’s C. But I’m not 100% sure.
I hope that helps.
I think the question is referring to the tab key.
Answer:
The answer is "Option D".
Explanation:
OLAP reports stands for Online Analytical Processing reports, These reports provide a platform that behind many application use in Business Intelligence. and other options are incorrect that can be described as follows:
- In option A, It is used to store the data into the OLAP report, that's why it is not correct.
- In option B, It is software that is used for analytics data, that's why it is not correct.
- In option C, It is used for finding index values in the 2D array that's why it is not correct.
The statement 'a data mart is the operational database for the company' is true.
We can define a data mart as a subject-oriented database that focuses on a particular area in an organization.
It is through data mart that the employees of a company can access data faster. Data mart, functioning as the operational database, helps employees as they do not have to manually add all the data again. Also, any piece of data needed by an employee can easily be accessed through the data mart of the company.
One of the advantages of using data mart is that it eradicates human-made errors which can arise if data is added manually by an employee.
To learn more about data mart, click here:
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