Dimensional databases are used to track historical data, and therefore must have a(n) ________.

Question

BlackTom AI · Accepted Answer

Dimensional modeling emphasizes organizing data into dimensions that describe facts, making historical analysis and time-based comparisons straightforward.
Option 1: 'time dimension' — This is the correct idea: to track historical data effectively, a dimensional database typically includes a time dimension so queries can slice data by day, month, quarter, or year, enabling trend analysis and slowly changing aspects.
Option 2: 'customer dimension' — While a customer dimension is common in many datasets, its presence alone does not address the requirement to track historical changes over time. A customer dimension helps describe who is involved, but not the temporal aspect essential for history tracking.
Option 3: 'sales dimension' — A sales dimension might describe attributes related to sales activities, but it does not inherently provide the historical, time-based structure needed to track changes across periods. It adds contextual data rather than temporal tracking capability.
Option 4: 'order dimension' — An order dimension captures details about orders, but like the sales or customer dimensions, it does not by itself guarantee historical tracking across time. The temporal aspect is provided by a dedicated time dimension, not by these domain-specific dimensions alone.

25SP-MIS542B-BL-14469 Final Exam

Dimensional databases are used to track historical data, and therefore must have a(n) ________.

查看解析

登录即可查看完整答案

类似问题

Data Warehousing B Match the aspects/components to their role in the model (choose the most specific role/term that applies). 1: Amount 2: Business 3: BankExpenditure 4: Country 5: TypeCategory 6: ‘Customer making a purchase’

Your manager asks you for a report on profit by customer. We learned about facts (or measures) and dimensions. Which is the dimension?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单