Joining data with common data between two unrelated data sets
Joining data is part of the life of a data analyst. The problem is that most data sets that need to be joined exist in different systems. This means there isn't a direct relationship we can establish using a key from the data system. We have to join data based on common fields to allow them to communicate.
If you’re a data analyst, you’ve no doubt learned different skills, techniques, and tools pertaining to data. But sometimes it can be difficult to know when and why to apply these tools. In this weekly series, instructor Robin Hunt explains a new skill, secret, tip, technique, best practice, or golden piece of advice in each installment. Robin covers topics that can help you do your job better, such as joining data and data designs, privacy for data, transforming and cleaning data, and making data sets and visualizing data.
Note: Because this is an ongoing series, viewers will not receive a certificate of completion.