Please enter a query for the ehealth4mdd Database. There are two ways you can do this. If you would like to select attributes from a list and provide a single constraint, you can send a closed query to the database. You can then sort this list on one of the attributes. As a second option, you can enter a MySQL query into an open query box. This gives more freedom to also aggregate data, constrain results on multiple variables, etc. Please select which type of query you would like to run.