Figure 3

The S3DB conceptual model. Five attributes (id, label, description, creator and created) and four methods (select, update, insert and delete) are common to all S3DB entities. In the current S3QL implementation, the label and description attributes are defined by the submitter of the data, whereas the id, created and creator attributes are automatically assigned by the system. Other dependencies were devised to comply with the definition of s3db:relationships.