SQLite Database has methods to create, delete, execute SQL commands, and perform other common database management tasks.
See the Notepad sample application in the SDK for an example of creating and managing a database.
Database names must be unique within an application, not across all applications.
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Cursor Factory cursor Factory, boolean distinct, String table, String columns, String selection, String selection Args, String group By, String having, String order By, String limit) When a constraint violation occurs, the command aborts with a return code SQLITE_CONSTRAINT. If a NOT NULL constraint violation occurs, the NULL value is replaced by the default value for that column.
But any changes to the database that the command made prior to encountering the constraint violation are preserved and are not backed out. If the column has no default value, then the ABORT algorithm is used.
Constant Value: 3 (0x00000003) When a constraint violation occurs, the one row that contains the constraint violation is not inserted or changed. Other rows before and after the row that contained the constraint violation continue to be inserted or updated normally. Constant Value: 4 (0x00000004) When a UNIQUE constraint violation occurs, the pre-existing rows that are causing the constraint violation are removed prior to inserting or updating the current row. If a CHECK constraint violation occurs then the IGNORE algorithm is used.
When this conflict resolution strategy deletes rows in order to satisfy a constraint, it does not invoke delete triggers on those rows. Constant Value: 5 (0x00000005) When a constraint violation occurs, an immediate ROLLBACK occurs, thus ending the current transaction, and the command aborts with a return code of SQLITE_CONSTRAINT.
If no transaction is active (other than the implied transaction that is created on every command) then this algorithm works the same as ABORT.