SuperMemo Manual
Chapter 2.2

The second screen, invoked by tapping the plus icon of the last Total line in the Database List screen, shows aggregate details about all databases. It also allows you to create a new SuperMemo database.

You will find them explained in these sections:

• Details about a selected database
• Actions with a selected database
• All databases details
• Creating a new database

Details about a selected database

1. The first line shows the number of all Cards in the database. It is a sum of the next two lines, Memorized and Remaining cards.
   
   
2. This line shows the number of Memorized cards, in other words, the number of cards that have been committed to the learning process. You can also see the percentage value in the round brackets.
   
   
3. The third line displays the number of Remaining cards, i.e. those that have not been committed yet.
   
   
4. Number of Categories tells you how many categories you have created in your database, plus one system category Unfiled.
   
   
5. The next line shows the date on which the database was Committed. The database is committed when you commit its first card. The value in the round brackets shows you the day difference between the commitment date and this day. In our example, the database was committed 99 days ago.
   
   
6. The last line shows you the date on which the database was Created. Of course, a database is created before it is committed, so this date is the same or older then the date on the previous line. Again, you can see the day difference in the round brackets. Our example database was created 101 days ago, 2 days before it was committed.

Actions with a selected database

1. If you do not want to use a database any more, you can Delete it. This will delete the whole database, i.e. all cards and the learning progress from your device. Be careful! Do not accidentally delete a knowledge collection on which you have been working for months. To prevent this, you must confirm the database deletion twice.
   
   
2. If want to start learning a database from scratch, you can Reset it. You will need this only when you receive a database created and used by someone else. Resetting the database will delete the whole database learning progress, and all database cards will be removed from the learning process. The cards themselves will not be deleted however. Be careful! Do not accidentally reset a knowledge collection that you have been learning for months. To prevent this, you must confirm the database resetting twice.
   
   
3. Use the Erase drill command if you do not want to finish a drill of the database. The cards will remain in the database but they will be removed from the drill. Use it when you have added more cards to drills than you can handle. You can also use it on drills automatically prepared by SuperMemo from wrong answers in tests, if you have not worked with SuperMemo for a long time (this should not happen though!).
   
   
4. If you want to make some experiments with a database, or create extra drills, or prepare your database to distribution by resetting it, you can Duplicate it first. This function will create an exact copy of the selected database. The original and the duplicate will be completely independent, however.
   
   
5. Finally, if you want to change the name of the current database, you can Rename it. If you want to Merge the current database with another one, just rename it to the name of the destination database.

All databases details

1. The first line shows the number of all Cards in all SuperMemo databases. It is a sum of the next two lines, Memorized and Remaining cards.
   
   
2. The second line shows the number of all Memorized cards, in other words, the number of cards that have been committed to the learning process. You can also see the percentage value in the round brackets.
   
   
3. The third line displays the number of Remaining cards, i.e. those that have not been committed yet.
   
   
4. The last line shows the number of SuperMemo Databases. In our example, we have 7 databases in SuperMemo.

Creating a new database

You will see a pop up screen where you can enter a name for the new database. Database names can be up to 28 characters long. The names must be unique, which means that you cannot have two databases with the same name.