Question 191 · 291 in bank
In a fully denormalized database, how is data read and written for a single entity?
Show answer
Answer: A
Explanation
Denormalization involves consolidating data into a single table to reduce the need for joins and simplify querying. This results in improved read performance as all the necessary data for a single entity can be retrieved from a single table without requiring joins with other tables. Similarly, when writing data, it is written to a single table without the need to update multiple tables. This approach is commonly used in data warehousing and reporting scenarios where read performance is prioritized over storage efficiency and data modification speed.
Source: Adapted from community discussion — Mega2
