Updating a database

The alert service and the electronic lists are a 12 month subscription. Database support is the lifeline of every application, big or small. Within the DBAdapter class, you extend the SQLite Open Helper class—an Android helper class for database creation and versioning management.For example, Mozilla Firefox uses SQLite to store configuration data and i Phone also uses SQLite for database storage. Notice that Android uses the Cursor class as a return value for queries.In Android, the database that you create for an application is only accessible to itself; other applications will not be able to access it. Think of the Cursor as a pointer to the result set from a database query.FCC License View – a key part of the Agency's spectrum inventory – captures spectrum licensing information from multiple FCC databases and includes licenses that are active or inactive because they have been cancelled or expired.

Code Lists Code Lists can be purchased from this page as electronic CSV files, email change alert subscription, or printed lists.Once created, the SQLite database is stored in the A good practice for dealing with databases is to create a helper class to encapsulate all the complexities of accessing the database so that it's transparent to the calling code. Using Cursor allows Android to more efficiently manage rows and columns as and when needed.So, create a helper class called DBAdapter that creates, opens, closes, and uses a SQLite database. You use a Content Values object to store key/value pairs.However, in this section you won't need them to solve the problem of updating a join, because in ADO, joins are naturally updatable.For example, the Join Data example is built around an ADODataset component that uses the previous SQL join.