2.1 Types of Entries

The database contains 3 kinds of entries:

Sections: A “section” is very much like a directory (or folder). It lists sub-entries and gives their corresponding URLs.
Contacts: A “contact” describes an individual or organization. A reference to such an entry can appear for example as an “author” field in a “package” entry.
Packages: A “package” describes (surprise!) a package. In particular, it typically gives a URL for downloading the package.

Valid IDs

Each entry is assigned, and denoted by, a unique ID that is a URI of the general form:

mogul:/sherlock/BakerStreet/pipe

To guarantee that no ID collision can occur, the use of valid IDs is enforced. A valid ID is defined as follows:

Either it was obtained from the Mozart Consortium by email request to [email protected].
Or it is of the form SUP/SUB where SUP is a valid id for the section in which it occurs.

Thus, once you have obtained a valid id, you can construct new ones by appending new path components.