Menus and in-place activation of OLE objects If you want to prevent users from entering a Null value by using a combo box, set the Required property of the field in the table to Yes. In version 2.0, a combo box that has the LimitToList property set to True won't accept a Null value unless the list contains a Null value. In Microsoft Access 2002 or later, combo boxes accept Null values when the LimitToList property is set to True (–1), whether or not the list contains Null values. If your database won't convert, delete some relationships and try again to convert the database. The Microsoft Access database engine creates indexes on both sides of relationships between tables. Very complex tables that are a part of many relationships may exceed the index limit, and you won't be able to convert the database that contains these tables.
Indexes and relationshipsĪ Microsoft Access table can contain up to 32 indexes. The following sections provide more information about those changes. Several changes introduced by Microsoft Access 2002 might affect the behavior of your version 1. Convert Microsoft Access tables, forms, and reports
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