Integration of code

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Integration to open database using password.

    sqlite3 *db;
    NSString *strPassword = @"password";

        if (sqlite3_open_v2([[databaseURL path] UTF8String], &db, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL) == SQLITE_OK) {
            const char* key = [strPassword UTF8String];
            sqlite3_key(db, key, (int)strlen(key));
            if (sqlite3_exec(db1, (const char*) "SELECT count(*) FROM sqlite_master;", NULL, NULL, NULL) == SQLITE_OK) {
                NSLog(@"Password is correct, or a new database has been initialized");
            } else {
                NSLog(@"Incorrect password!");

- (NSURL *)databaseURL
    NSArray *URLs = [[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask];
    NSURL *directoryURL = [URLs firstObject];
    NSURL *databaseURL = [directoryURL URLByAppendingPathComponent:@"database.sqlite"];
    return  databaseURL;

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