An MDB file is a database file created using Microsoft Access or a compatible software or interface. Although the Microsoft Access Database (database) format is a proprietary format, Microsoft has since made it partially accessible. Since Access 2007 the extension accdb is used.
Microsoft Access is a relational database application that is widely used worldwide. Access is part of the Microsoft Office suite, but only available for Windows. However, there are other database programs and numerous applications that can handle or use MDB files because MDB databases can also be accessed and generated using the Microsoft Visual Studio programming applications. (eg with Visual C #)
An MDB database file contains not only the pure data, but also the structure (tables and fields), input masks, queries, and database security settings. Mbd files can also contain links to files of other Microsoft Office applications (eg Excel spreadsheets). Unfortunately there are quite a few versions of the MDB format that are not all compatible with each other. Therefore, a converter must be used for import problems.
When reading into foreign programs or converting an MDB file, in most cases "only" the data is obtained. On the other contents like the input masks and so on one must do without normally.
On Mac OS systems, one can use 'actual Tech Access Databases' to set up an interface for accessing other applications on Access databases. (eg for FileMaker)