Android knowledge databases of yesterday learning.
Today intends to do a good job in addition to the remaining functional aspects of the home page.
Because this semester opened the database in this course, so it's time to change is not too difficult, but compared to Android's database is smaller simpler and more convenient. Problems encountered is that I can not see at the beginning of my Android data in the database, and finally found that access to relevant information to download the appropriate plug-ins, and then resolved.
Restrictions on data added some books on the database, such as data defult defaults problem, remember the password for the account ·, distinct data is not allowed to repeat