You can use an Access 2000 database or Access 2000 project (Microsoft Access project: An Access file that connects to a Microsoft SQL Server database and is used to create client/server applications. A project file doesn't contain any data or data-definition-based objects such as tables and views.) in Access 2002 or later by simply opening the file— no further action is necessary. You can make design changes that take advantage of features new in Access 2002 or later. When you open the file in Access 2000, any functionality specific to Access 2002 or later is simply ignored. You can make design changes in Access 2000. When you open the file in Access 2002 or later, the design changes that take advantage of feature specific to Access 2002 or later remain intact in most cases.