QlikView is a data visualization and business intelligence software developed by Qlik. It uses a unique associative data model that allows users to easily explore and analyze data from multiple sources, by creating interactive visualizations and dashboards. The software's interface allows users to make associations between data fields and to easily drill down and explore data in a self-service manner. QlikView can connect to a wide range of data sources including relational databases, spreadsheets and cloud-based data warehouses. It also includes a scripting language called QlikView Script, which allows developers to create custom data transformations, calculations and data integrations. QlikView is known for its interactive and intuitive interface, and its ability to handle large and complex data sets. It's widely used in a variety of industries for a wide range of use cases such as data discovery, reporting, and decision-making.