A data catalog is a tool or system that enables the organization, description, and discovery of data assets within an organization, serving as a central ‘inventory’ of available data.
A data catalog contains information about data, such as:
- Metadata – data description (e.g., source, structure, owner)
- Data location – where data is stored
- Business definitions – the meaning of specific data points
- Data history and origin (data lineage)
- Data quality
Thanks to a data catalog, users – both analysts and business teams – can easily find the data they need and understand its context without involving the IT department.
A data catalog is a key element of data governance, as it supports data management, increases data accessibility, and improves the quality and security of working with data within an organization.
In modern analytical environments, data catalogs are often integrated with BI platforms and data integration tools, enabling rapid discovery and utilization of data across the entire organization.