This is all about chessbase and 32 basic types and 283 total icons for identifying each of the 283 type "databases" chessbase uses. Compare and decide for yourself which is better and faster and far more advanced; then decide if users of SCID or Chessbase have more options,specifics,details,etc. I wasn't kidding when I said this stuff is used by pros; and SCID has nothing close to remotely touch it, let alone trump/beat it.
Types of databases
You can set the database type by right-clicking the icon in the database window and selecting Properties. The type you select determines which icon is associated with it.

You can also set a number of other options for a database in the Properties menu.
Name
The descriptive name under the database icon can be different from the more technical filename.
Training
Makes it a special trainings database where you store lessons, while ChessBase keeps track of the score.
Show protocol
This displays all the databases that were copied into the current one (the "import protocol").
Reset protocol
Clears the import protocol, e.g. before the publication of a database.
Reference database
This makes it a special Reference database which ChessBase consults on all major questions (unless you specify otherwise).
Repertoire database
This is a database in which ChessBase looks after your Repertoire.
Always open text
When the first entry in a database is a text report it is automatically opened when you first start the database. After that you can only open the text manually. You can click this option to make it open every time you start the database.
See also database formats.
Chessbase Database Types
1.unspecific
2.work
3.my games
4.large database
5.informants (game collections from "informants" 3x per year) 6.openings
7.magazine/express (chessbase magazine dvd's)
8.classical tournaments
9.recent tournaments
10.correspondence game
11.tactics
12.analysis
13.training
14.endings
15.studies
16.blitz
17.computer chess
18.problems
19.patzer (weak player)
20.gambit
21.bdf
22.match
23.biography
24.multimedia (video)
25.important
26.text (articles, notes)
27.internet
28.email
29.opening book
30.chess media (fritz trainer videos, interactive, tests)
31.flag (no color, used to flag a database for extra attn.)
32-283 color flags of each country, (3 letter country code) 252 countries!
There you have it, enjoy. Look for the upcoming blogs and the new youtube video on this. As far as I know, nobody has ever done a video this indepth on 32 basic "categories" of database types...yet!