You can access this folder using the DDMS for your Emulator. you can't access this location on a real device unless you have a rooted device.
You can view Table structure and Data in Eclipse. Here are the steps
*Note: If the database doesn't light up, it may be because your database doesn't have a *.db file extension. Be sure your database is called [DATABASE_NAME].db
*Note: if you want to use a DB without .db-Extension:
Download this Questoid SqLiteBrowser: http://www.java2s.com/Code/JarDownload/com.questoid/com.questoid.sqlitebrowser_1.2.0.jar.zip
Unzip and put it into eclipse/dropins (not Plugins)
Check this for more information