Comments to Connections
Connection 1
The m-n-relationship between RG and R is necessary, because every RG can be assigned only one platform on which the game was published, but on the other hand there is multi-platform releases.
Connection 2
Example:<br>
Assignment of the title "X-Wing" to the first game in the X-Wing series gets the comment "Common short form of the title".
Connection 3
Examples:<br>
Assigning of the title "Star Wars: X-Wing - Space Combat Simulator" to the initial English release of the first game in the X-Wing series gets the comment "Cover Title". [http://www.mobygames.com/game/dos/star-wars-x-wing/cover-art/gameCoverId,88795/ Link]<br>
Assigning of the title "Star Wars: X-Wing" to the initial English release of the first game in the X-Wing series gets the comment "Title from title screen". [http://www.mobygames.com/game/dos/star-wars-x-wing/screenshots Link]
Connection 4
This is the relationship that connects an add-on to its main game entry. An m-n-relationship is needed, because we can never be sure that every add-on will only connect to one single main game. This connection on RG level (in opposition to connecting on G level) will allow for more fine-grained possibilities. Exemplary, we will be able to map an add-on that wasn't released on every platform the main game was.
Connection x
Exemplary, Switzerland has four official languages: German with a population share of 63.7%, French with 20,4%, Italian with 6,5% and Romansh with 0,5%. If a user chose a Swiss nationality inside the database, we could do a pre-sorting of displayed data with language attribute (screen shots / R / publications) according to these languages, if the user wishes so.
Connection y
Using this we will, exemplary, be able to create a region "Europe" which we, naturally, will assign every European country to. This region shall then be assigned to every R, which was published identically throughout Europe. Or there is some R which were released identically in every German-speaking country. This would qualify for a region, too.