Data science works to establish questions and provide paths towards the answers that form understandings from data. Data science is fundamental in both engineering and analysis. In practical terms, though, data scientists are more likely to work with data inducted through a system created through data engineering. They can then ask questions about the data and help refine systems to ensure they are purposeful in the context they exist to serve, e.g. sales, health, science, etc.
Data scientists will assist in the creation of machine learning models that use data for predicting future outcomes. Data analysts are instead focussed on finding patterns, trends within historical data.