What is an accda file and how do I open an accda file?

A Microsoft Access database add-in file is used by the Microsoft Access 2007 software for the creation of add-in applications with digitally signed signatures that can be implemented into the Microsoft Access 2007 database management program to extend its integrated set of functionalities. These Microsoft Access database add-in files are integrated with data encoding specifications used to store its content in the ACCDA file format. The digitally signed signature certificates implemented into these Microsoft Access database add-in files help the user to decide whether the add-in contains legitimate code for extending the features of the Microsoft Access 2007 software. The Database Wizard applet is a program built into the Microsoft Access 2007 software, and this applet uses the ACCDA file format. These Microsoft Access database add-in files are affixed with the .accda extension.