The following table gives the maximum size for various attributes of a database.
| Attribute | Maximum |
| Database (.mdb) file size | 1 gigabyte. Because your database can include linked tables in other files, its total size is limited only by available storage capacity. |
| Number of characters in an object name | 64 |
| Number of characters in a user password | 14 |
| Number of characters in a database password | 20 |
| Number of characters in a user name or group name | 20 |
| Number of concurrent users | 255 |