Suggested name schema
=====================

RESOLVER=https://{www.,}plbd.{org,ibt.lt}/

/db/               -- this is a *public* database dir; access rights are set on this dir

/db/main           -- instead of "public"; full name: https://plbd.org/db/main
/db/...            -- other public databases

/public-db -> /db  -- preserve the announced name; note for ourselves that the top level is public
                   -- https://plbd.org/public-db/main

/private/

/private/db/       -- access rights are set on this dir; full name: https://plbd.org/private/db/

/private/db/BVTS   -- full name: https://plbd.org/private/db/BVTS
/private/db/BVTS_test
/private/db/CIB
/private/db/...    -- other private databases

/schemas/          -- maybe better '/schemata/'?
/schemas/db/
/schemas/db/...    -- stable URIs of *public* XML schemas

/private/schemas/db/ -- same for private schemas.

/doc
/doc/xml

/private/doc
/private/doc/ibt
/private/doc/cib

index.html         -- default home page (as designed for our paper)

Constraints to be met
=====================

1. The word 'public' shall not me mentioned in the names as much as
   possible;

2. There should be no duplication of names in the hierarchy
   (e.g. 'https://pldb.org/pldb/PLBD' or
   'https://plbd.org/public-db/public' is bad);

3. Names of the same semantic weight are on the same level;

4. New names and categories can be introduced without limitations ("no
   magic names"); (e.g. 'https://plbd.org/public-db/public' is bad --
   is '/public/' the only possible public DB?)

5. New names and categories can be introduced without reordering the
   tree in the future.