Integrated Water Resources Management requires exchange of data and information among sectors. Often data is stored in files on harddisks, CD-ROMs or DVDs. This makes it hard to find the data. In addition, metadata is often lacking, which makes it hard to evaluate the quality of the data and to reuse the data. A Spatial Data Infrastructure (SDI) can enable water sector organisations to improve the exchange of data within and among organisations. An SDI is a data infrastructure implementing a framework of geographic data, metadata, users and tools that are interactively connected in order to use spatial data in an efficient and flexible way. In this course you will learn how to preprocess data before it can be stored in an SDI, style data with Styled Layer Description (SLD) files, save metadata, set user rights, manage and use a spatial database, manage an SDI and present interactive data online.