Rajab Davudov - Android Database

1. Rajab Davudov

2. What is SQLite?
• SQLite is Open Source Database
embedded into Mobile Devices.
• SQLite supports SQL syntax, transactions
and prepared statements.
• SQLite consumes low memory approx.
250Kbyte.

3. SQLite Types
• TEXT (String in Java)
• INTEGER (long in Java)
• REAL (double in Java)

4. SQLite in Android
• SQLite comes with all Android devices
• Application database is stored at
DATA/data/APP_NAME/databases/FILENAME

5. SQLite in Android
• Two packages
– android.database
– android.database.sqlite

6. SQLiteOpenHelpler
• onCreate()
• onUpgrade()
• getReadableDatabase()
• getWriteableDatabase()

7. SQLiteDatabase
• insert()
• update()
• delete()
• query()
• rawQuery()

8. insert()
ContentValues values = new ContentValues() ;
values.put("username", username) ;
values.put("fullname", fullname) ;
values.put("password", password) ;
database.insert("users", null, values) ;

9. query()
Cursor cursor = database.query(
"users",
new String[] {"fullname"},
"username = ? and password = ?",
new String[]{username, password},
null, null, null) ;

10. rawQuery()
Cursor cursor = database.rawQuery(
"select fullname from users where username = ?
and password = ?",
new String[] { username, password }) ;

11. Cursor
A Cursor represents the result of a query and
basically points to one row of the query result.
• getCount()
• moveToFirst()
• moveToNext()
• …

12. Ready, Steady, Code !!!

13. Rajab Davudov
Senior Developer at Azerfon
radjab@gmail.com
https://market.android.com/developer?pub=RADJAB
http://gplus.to/radjab
http://www.fb.me/rajab.davudov
http://www.linkedin.com/in/radjab
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