A Data Manager is a professional who oversees the development and use of data systems, ensuring effective data management, secure procedures, and data analysis. They enforce policies, establish data sharing rules, and troubleshoot data-related issues for organizations. A Data Manager develops data-oriented systems to meet an organization's needs. Their responsibilities include creating and enforcing data management policies, formulating management techniques for quality data collection, and implementing efficient and secure procedures for data management and analysis. Deal with duplicate's ,mismatching data sets ensure the valid data on run time process.