Open the database in Access 2007 and save as Access 2007 format.
Access 2003 will not be able to open it properly. What you can do is open it in Access 2007 and save it in the 2003 format. If you do not have Access 2007, you will need to get someone else to do it for you. It may still lose some of the data and elements that are in Access 2007 but not in Access 2003.
Yes, for the most part the two are compatible, however Access 2007 creates a new type of database format (ACCDB) that Access 2003 cannot read (it uses MDB). There are some new features in Access 2007 that 2003 does not have (obviously), but if you're using a database that's formatting for 2000 or 2003, then Access 2007 can work with it seamlessly. My advice is that if you have users on multiple versions of Access, then use the database file format with the OLDEST version common to everyone. Richard Rost AccessLearningZone.com
Microsoft Access 2003 or Microsoft Office Access 2003 is a relational database management system from Microsoft that combines the relational Microsoft Jet Database Engine with graphical user interface and software development tools. Its successor is the Microsoft Office 2007.
Database Access
just open them in the File>Open dialog. See: http://office.microsoft.com/en-us/access/HA102091151033.aspx
Microsoft Access 2007 is one version of Microsoft's database software package. Microsoft Access comes with a variety of prebuilt database solutions.
Maximum size of a single Microsoft access 2007 is 2 GB. They can be linked to other tables in a database.
.accdb is the file extension for Microsoft Access and has been used since Access 2007. The previous file extension was .mdb.
It's Impossible.
Excel has limited capability to act as a database.
Not in MS Access 2007. However it is a Database Design Language.
.accdb is the extension used for Access 2007 and 2010.