Database application with approx. 1000 data sets and responsive modern design and many additional functions

complete website with possibility to find records for specific search terms from database with approx. 1000 records In about 20 tables - a main table and other tables for categories, types and contact persons etc. (see attachment of database-structure) Graded user-level access system in the front end, depending on the purchase option (Silver-Gold-Platinium). User management, automatic update of annual subscription, automatic mailing list for interested parties of certain categories. In addition to php programming on complete responsibles design (usable also for mobile phones and tablets) in the frontend and backend. modern Ajax technologies for search. Possibilities to subscribe to individual categories and get automatic mails (newsletter function). Newly maintained records should be posted in Joomla as an article. For backend users likewise graduated system of the access and release rights. Multilingualism should also be given. n exact description after successful initial contact After the first expansion stage, at least three additional modules will be available for this database application