Hi
My thoughts.....
1. Catalogue of companies (to which services performed can be attached)
-- companies and services are content types based on article object. In your companies firm you can have a Select Dynamic Field that pulls in all the services, maybe use fieldx if having more than one service....
2. All service catalog (which can bind to businesses) - photo, name, from which the raw material is produced, which firms are engaged in what tseniki on these services offer a variety of firms (in the form of a price list for each service)
-- A List and Search Type will list all Services, each list item can have a nested list if required..... The price list could be constructed by Select Simple field or as an entry in the db which you pull in using Select Dynamic....
3. supply system ads on site (request for provision of services), which were distributed to all subscribing companies
-- The add could be a List and Search of an 'ads' content type ...
4. Personal account for each firm (name, website, telephone, mail, the location on the map, the city, the subway, etc..). The division into three types of firms: service customers, manufacturers, suppliers of raw materials.
-- At a basic level, Each firm is a user with Select Simple for service customers, manufacturers, suppliers of raw materials, or maybe use Tags! Another (better) Option could be to to have the firm as a usergroup... There is no content view for usergroup and so need to have 'usergroup bridge' enabled so that you can use an article view, you can then create menu items etc for this article view etc...
5. wiki - knowledge base.
6. News block.
-- A standard Joomla! article or a news content type based on article object
7. The Forum. ............
-- I think the Seblod guys would recommend using 3rd party for this though you could potentially still use Seblod for the ui to allow for consistent look and feel
That's all, some nuances are precisely spelled out in the terms of reference. Full "relationship" service-firm raw material "- that is, pressing the firm - see its services, by clicking on the service - see the company by clicking on the raw material - see what it is used, etc.
-- You can create a list of firms, in the list or item view you can have a nested list which shows it's services... Might be tricky to have all that in one list view... or if you mean click on firm and be redirected to it's services then you can pass values in the url to each subsequent 'List and search type. ie click on firm and pass the firms id to the services list and search ....
each firm has a Interested in terms of manufacturing, the price. The site is needed on the system of Joomla + Seblod, to be updated in the future without any problems. Third-party modules and plug-ins is not very desirable (except the forum and a wiki course, without their third-party modules to make impossible).
-- sounds reasonable
Working conditions:
1. Joomla is already installed, Seblod too.
2. Do not change the Joomla core and add additional fields to the main table of Joomla (you can make a new table).
-- should not need to
3. After creating the site - it will need support (backups, updates, etc.) for at least 1 year.
-- sounds reasonable
Waiting for your suggestions here or in PM. The name of the site in a personal tell.
This is how I might approach it,
Good Luck
Jon