Import Legacy Tag Databases

Prior to the release of VTS 10, tags were stored in a database file named Points.MDB. For most applications, this was a Microsoft Access database. (Microsoft SQL Server was used by a very small number of applications.) These Points databases did not include any information to identify the application, or its version.

You can import the tags from an older application's Points.MDB file. The steps are the same as those provided in the previous topic but, be aware of two potential problems:

  • The file, Points.MDB stores tag instances, but not type definitions. If the source file used type definitions from an OEM layer, then the destination application must also have access to that layer's code to use the tags.
  • Conflicts between tag names in the older database and the current application may not be resolved the way you would prefer. Because the older database has no version control information, VTScada is not able to automatically determine how to resolve a conflict between two tags of the same name.

After importing an older tag database, you must compile the current application (using the Import File Changes button) before you be able to see all of the imported tags.