International Journal of Engineering and Advanced Technology (IJEAT)
Metadata usually called data about data represents information about data to be stored in a data warehouse. Importance of metadata arises from the fact that it is needed to map data from source systems to data warehouse with the help of Extraction Transformation Loading (ETL) tools. Metadata helps in developing consistency in data collection and usage and moreover provides the foundation for data change management. It facilitates user to have faster and more accurate access to the data that is needed.