Description: A windowed table is a concept used in real-time data processing, especially in stream processing systems. It is defined over a window of data, meaning it allows for grouping and analyzing data that arrives within a specific time interval. This approach is fundamental for handling large volumes of real-time data, as it enables calculations and analyses on subsets of data collected over a given period. Windowed tables are particularly useful for tasks such as calculating averages, sums, or counts over time intervals, facilitating the extraction of meaningful insights from continuous data streams. Additionally, these tables can be dynamic, adapting to the arrival of new data and allowing for real-time updates, making them a powerful tool for applications that require quick and accurate responses. In the context of stream processing, windowed tables integrate with various programming models, allowing developers to define and manipulate data windows efficiently, optimizing the performance and scalability of data processing applications.