How To Create Databse .DB Sqlite File In Ios/iphone

=> Hare Call the Method Of Whitch Declared Belove Side:

-(BOOL)application:(UIApplication *)application

 didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.

    [self createDb];

    return YES;
}
==> Create One Databse File And Create Db And Usingf Some Method:

 -(void)createDb
{
    NSArray *dir=NSSearchPathForDirectoriesInDomains

   (NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *dbPath=[NSString

    stringWithFormat:@"%@/userDb.sqlite",[dir lastObject]];

    sqlite3 *db;

    NSFileManager *fm=[NSFileManager new];

    if([fm fileExistsAtPath:dbPath isDirectory:nil])
    {
        NSLog(@"Database already exists..");
        return;
    }

    if (sqlite3_open([dbPath UTF8String],&db)==SQLITE_OK)
    {
        const char *query="create table user

    (userName VARCHAR(20),userAdd VARCHAR(20), userPass VARCHAR(20))";

        if (sqlite3_exec(db, query, NULL, NULL, NULL)==SQLITE_OK)
        {
            NSLog(@"User table created successfully..");
        }else
        {
            NSLog(@"User table creation failed..");
        }

    }else
    {
        NSLog(@"Open table failed..");
    }
    sqlite3_close(db);
}