Question
In data management, what role does metadata play when
working with a large dataset of customer transactions?Solution
Metadata is crucial in data management because it offers detailed information about the structure, organization, and contents of a dataset, effectively serving as a guide. For customer transactions, metadata may include details like file format, data source, data type, creation date, and author, among others. This context helps analysts understand the dataset’s structure and fields without manually inspecting the data itself, thus expediting data processing and analysis. Metadata is particularly important for ensuring data integrity, facilitating data sharing, and enabling accurate data interpretation, as it reduces the likelihood of errors by providing clear guidelines on dataset usage and attributes. The other options are incorrect because: • Option 1 describes segmentation, which is part of analysis, not metadata. • Option 3 refers to data cleaning and deduplication, unrelated to the descriptive role of metadata. • Option 4 suggests that metadata enlarges the dataset size, which is not its purpose. • Option 5 describes statistical summaries, not metadata, which provides structural information, not analysis results.
In a town of 5000 inhabitants, 75% are males, and 20% of them are literate. If 25% of the total population is literate, what percentage of the female po...
- L is 50% less than M and N is 45% more than O. If O is 22% more than L, then which of the following is true?
In a school, 60% of the students pass and 30 fail. The number of students appearing from another school is 25 more and 20 more students pass than the f...
Arvind spends 30% of his salary on travelling and 25 % on car fuel. If he spends 10% of his remaining salary on food and saves the rest, then What will ...
Rahul saves Rs. 6800 more if he spends 70% of his income instead of 90%. Find the savings of Sumit whose income is 25% more than that of Rahul, and spen...
During a school council election, candidate X received 61% of the votes and beat candidate Y by a margin of 4,880 votes. Determine how many votes candid...
- In a town, 30% of the population is ineligible to vote. Among those eligible, 50% are women. If 2/5 of eligible men and 1/5 of eligible women voted, find t...
Rihan spends 40% of his salary, which is Rs. 1200 more than the amount he would spend if he spent 30% of his salary. What is the total salary of Rihan?
A man donated 10%, 16% and 28% of his income to three NGOs ‘A’, ‘B’ and ‘C’, respectively. They spent 75%, 80% and 50% of respective sums re...