# android.database # android.database *** ** * ** *** Kotlin\|[Java](https://developer.android.com/reference/android/database/package-summary "View this page in Java") ## Interfaces |--------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [CrossProcessCursor](https://developer.android.com/reference/kotlin/android/database/CrossProcessCursor) | A cross process cursor is an extension of a[Cursor](https://developer.android.com/reference/kotlin/android/database/Cursor)that also supports usage from remote processes. | | [Cursor](https://developer.android.com/reference/kotlin/android/database/Cursor) | This interface provides random read-write access to the result set returned by a database query. | | [DatabaseErrorHandler](https://developer.android.com/reference/kotlin/android/database/DatabaseErrorHandler) | An interface to let apps define an action to take when database corruption is detected. | ## Classes |----------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [AbstractCursor](https://developer.android.com/reference/kotlin/android/database/AbstractCursor) | This is an abstract cursor class that handles a lot of the common code that all cursors need to deal with and is provided for convenience reasons. | | [AbstractWindowedCursor](https://developer.android.com/reference/kotlin/android/database/AbstractWindowedCursor) | A base class for Cursors that store their data in[CursorWindow](https://developer.android.com/reference/kotlin/android/database/CursorWindow)s. | | [CharArrayBuffer](https://developer.android.com/reference/kotlin/android/database/CharArrayBuffer) | This is used for[Cursor.copyStringToBuffer](https://developer.android.com/reference/kotlin/android/database/Cursor#copyStringToBuffer(kotlin.Int,%20android.database.CharArrayBuffer)) | | [ContentObservable](https://developer.android.com/reference/kotlin/android/database/ContentObservable) | A specialization of[Observable](https://developer.android.com/reference/kotlin/android/database/Observable)for[ContentObserver](https://developer.android.com/reference/kotlin/android/database/ContentObserver)that provides methods for sending notifications to a list of[ContentObserver](https://developer.android.com/reference/kotlin/android/database/ContentObserver)objects. | | [ContentObserver](https://developer.android.com/reference/kotlin/android/database/ContentObserver) | Receives call backs for changes to content. | | [CrossProcessCursorWrapper](https://developer.android.com/reference/kotlin/android/database/CrossProcessCursorWrapper) | Cursor wrapper that implements[CrossProcessCursor](https://developer.android.com/reference/kotlin/android/database/CrossProcessCursor). | | [CursorJoiner](https://developer.android.com/reference/kotlin/android/database/CursorJoiner) | Does a join on two cursors using the specified columns. | | [CursorWindow](https://developer.android.com/reference/kotlin/android/database/CursorWindow) | A buffer containing multiple cursor rows. | | [CursorWrapper](https://developer.android.com/reference/kotlin/android/database/CursorWrapper) | Wrapper class for Cursor that delegates all calls to the actual cursor object. | | [DatabaseUtils](https://developer.android.com/reference/kotlin/android/database/DatabaseUtils) | Static utility methods for dealing with databases and[Cursor](https://developer.android.com/reference/kotlin/android/database/Cursor)s. | | [DataSetObservable](https://developer.android.com/reference/kotlin/android/database/DataSetObservable) | A specialization of[Observable](https://developer.android.com/reference/kotlin/android/database/Observable)for[DataSetObserver](https://developer.android.com/reference/kotlin/android/database/DataSetObserver)that provides methods for sending notifications to a list of[DataSetObserver](https://developer.android.com/reference/kotlin/android/database/DataSetObserver)objects. | | [DataSetObserver](https://developer.android.com/reference/kotlin/android/database/DataSetObserver) | Receives call backs when a data set has been changed, or made invalid. | | [DefaultDatabaseErrorHandler](https://developer.android.com/reference/kotlin/android/database/DefaultDatabaseErrorHandler) | Default class used to define the action to take when database corruption is reported by sqlite. | | [MatrixCursor](https://developer.android.com/reference/kotlin/android/database/MatrixCursor) | A mutable cursor implementation backed by an array of`Object`s. | | [MergeCursor](https://developer.android.com/reference/kotlin/android/database/MergeCursor) | A convenience class that lets you present an array of Cursors as a single linear Cursor. | | [Observable](https://developer.android.com/reference/kotlin/android/database/Observable) | Provides methods for registering or unregistering arbitrary observers in an[ArrayList](https://developer.android.com/reference/kotlin/java/util/ArrayList.html#). | ## Exceptions |------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------| | [CursorIndexOutOfBoundsException](https://developer.android.com/reference/kotlin/android/database/CursorIndexOutOfBoundsException) | An exception indicating that a cursor is out of bounds. | | [CursorWindowAllocationException](https://developer.android.com/reference/kotlin/android/database/CursorWindowAllocationException) | This exception is thrown when a CursorWindow couldn't be allocated, most probably due to memory not being available. | | [SQLException](https://developer.android.com/reference/kotlin/android/database/SQLException) | An exception that indicates there was an error with SQL parsing or execution. | | [StaleDataException](https://developer.android.com/reference/kotlin/android/database/StaleDataException) | This exception is thrown when a Cursor contains stale data and must be requeried before being used again. |