Query and model data with SQL and work with relational databases. Covers preparing and quality-assuring the data, methodologically sound analysis, visualising results and presenting them audience-appropriately as a basis for decisions.Query and model data with SQL and work with relational databases. Covers preparing and quality-assuring the data, methodologically sound analysis, visualising results and presenting them audience-appropriately as a basis for decisions.Query and model data with SQL and work with relational databases. Covers preparing and quality-assuring the data, methodologically sound analysis, visualising results and presenting them audience-appropriately as a basis for decisions. moreQuery and model data with SQL and work with relational databases. Covers preparing and quality-assuring the data, methodologically sound analysis, visualising results and presenting them audience-appropriately as a basis for decisions.