Metadata Management in Data Warehouse is an essential process that helps to maintain the integrity of data, by providing the ability to track, organize, and control all relevant information about a data source. Metadata allows users to understand the purpose, content, structure, context, and usage of a data set. It helps to ensure data accuracy and promotes effective decision-making. Metadata is also used to enable data integration across different sources and applications, thus enabling a full understanding of how and when data changes over time. Effective metadata management can help businesses save costs, improve agility and maximize results.