Which of the following is an example of OLAP?

OLAP, or Online Analytical Processing, is designed for analyzing large volumes of data and providing the ability to perform complex calculations, trend analysis, and sophisticated data modeling. "Slicing and dicing" is a key functionality within OLAP systems, allowing users to view data from different perspectives. This includes breaking down data into smaller segments (slicing) and re-organizing it to see various summaries (dicing).

When users slice and dice data in OLAP, they can manipulate and analyze information quickly, often involving multidimensional views that facilitate deeper insights into the data. This aspect of OLAP is essential for business intelligence and analytics, making it distinct from other data processing methods that do not provide such analytical capabilities.

The other choices represent different processes that do not align with the analytical focus of OLAP. Record keeping pertains to maintaining and storing data, which is not used for analysis but rather for tracking. OLTP transactions refer to Online Transaction Processing systems that focus on managing day-to-day operations with a high volume of short online transactions. Data input validation is a process aimed at ensuring the correctness and quality of input data, distinct from the analytical capabilities of OLAP. Thus, slicing and dicing data is the precise representation of OLAP functionalities.