What are data elements that are not stored in a database but are calculated on demand from other data elements that are stored in the database?
A) On-line data elements
B) Virtual data elements
C) Stationery data elements
D) Index data elements

Question

Quizplus · Accepted Answer

Virtual data elements are not physically stored in the database but are instead calculated on demand from other data elements that are stored in the database. This approach can be useful for reducing database storage requirements and improving query performance. On-line data elements are typically stored in the database but updated frequently in real-time or near real-time, while stationery data elements are fixed and unchanging. Index data elements are used to improve database performance by speeding up the process of searching for specific data.

What Are Data Elements That Are Not Stored in a Database