Abstract
- Process of combining data from multiple sources into a single, summarized form
- Some aggregation techniques are Summarisation, Grouping, Filtering & Joining
Terminologies
Summarisation
- Involves calculating summary statistics for the data - mean, median or mode
Grouping
- Involves grouping the data into categories and summarizing the data within each category
Filtering
- Involves selecting a subset of the data based on certain criteria
Joining
- Involves combining data from two or more sources