Merge, join, and concatenate datasets from "summary" of Python for Data Analysis by Wes McKinney
When working with data, it's common to have multiple datasets that need to be combined in various ways. This process can involve merging, joining, and concatenating datasets. Merging involves combining datasets based on a shared key, which could be a column in each dataset. This allows you to bring together related information from different sources into a single dataset. For example, you might have one dataset with customer information and another with their purchases. By merging the two datasets on a common customer ID, you can create a new dataset that includes both pieces of information.
Joining is a specific type of merge that combines datasets based on the values in their keys. There are different types of joins, such as inner, outer, left, and right joins, which determine how the data is combine...
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