Is it possible to combine data from multiple tables into a model in django?

Question

Django

The data model is represented by a set of properties stored in different tables and different databases.
That is, several tables store the same set of objects.
Is it possible to stir up such a tricky model, with a tricky manager and a tricky queriset, so that it looks (for the djangoadmin, at least) like a model stored in one virtual table (outer join of the original ones).
From another point of view: the model is stored in a distributed relational database.
The question is rather theoretical, but it seems interesting.
In my particular application, there are only 4 independent fields and, apparently, it will be easier to make one master table to store all the properties, stuff it into the rest of the bases in pre / post_save, and hope that the data does not get out of sync.

Answer 1

Look towards InlineModelAdmin
Example

from django.contrib import admin
from catalog.models import Item, ItemPhoto, ItemParams
class ItemPhotoInline(admin.TabularInline):
    model = ItemPhoto
    extra = 1

class ItemParamsInline(admin.TabularInline):
    model = ItemParams
    extra = 1

class ItemAdmin(admin.ModelAdmin):
    list_display = ('name', 'price', 'oldprice', 'show', 'available', 'sort', 'create', 'update')
    list_display_links = ('name', 'price')
    list_filter = ('show', 'available', 'offer')
    search_fields = ['name']
    list_editable = ("sort",)
    fieldsets = (
        (u"Настройки", {'fields': ('category', 'offer', 'show', 'sort', 'ref_url')}),
        (u"Общее", {'fields': ('name', 'url', 'title', 'vendor', 'picture', 'thumbnail', 'price', 'oldprice', 'text', 'subtext')}),
        (u"XML", {'fields': ('xml_id', 'xml_original_id', 'xml_category_id')}),
    )
    inlines = [ItemPhotoInline, ItemParamsInline]

admin.site.register(Item, ItemAdmin)