The hardest dimension to make meaningful is the Path dimension, which contains URL information. Dynamic content generation technologies can serve differing page content in response to requests for a path. Thus, URLs might differ only in their query string, POST data, or other HTTP request content.
Path values are used to populate the URL dimension that is provided by Experience Analytics. Depending on how this dimension is configured, your database can grow without limit.
Data management of dimensions is especially important for dimensions that capture a high volume of values, such as URL. Implementation of specific instructions for managing URL and other high-volume dimensions can help to prevent runaway database growth.