# Session 2: Data Demonstrations
Welcome back to Making Sense of Maps and Data!
# In this session, we will
- dive deeper into different types of data
- learn about how the geometry of spatial data is connected to the shape of the real world ("projections")
- go over the concept of how to relate spatial data and attributes ("joining" data)
- review some common file types you might encounter when making a map
- have a closer look at the LMEC Public Data Portal and learn about metadata
# From last time
In the last session, we...
- introduced the basics of maps and data
- discussed the differences between maps and the data that underly them
- discussed the conscious and unconscious biases engrained in the maps we view and create
# Key Terms
- join
- projection
- coordinates
- identifier
- Shapefile
- GeoJSON
# Goals of this session
At the end of this less, you'll be able to:
- Explain what is needed in order to bring data about space (geometry) together with data about what's happening in those spaces (attributes)
- Identify the most common types of file formats used in maps
- Understand the difference between data and metadata