How do I implement Database Security Paging

In the case where the Database Files are listed separately from the database proper,  you can Restrict Access to an individual file, then add programming code to account for the loss of the file by referencing a substitute file containing information that you have chosen to present to the user.

If you do not wish to allow access to your database files by anyone at all, then simply secure the database and remove the secured file.  Leaving others to contend with an error message when the system cannot find the missing file.  In this case there would be no extra programming at all.  Job's done.

Where the files are an integral part of the database itself, you will need to take extra measures to secure the database.  Implementing the Missing Page Technique may involve accessing a copy of the complete database on the secured device, for processing new entries.  Using a modified file on the unsecured database, with only the Identification Number being available, while all other fields could be defaulted to "Unavailable" for text fields, 0 for numeric fields and Today's Date for date fields.  The secured database, in this case, would have a link to the unsecured copy of the file in question, in order to update the ID number on new entries.

There are many ways to implement security but in the end it is your choice.  To secure or not secure. If you can grasp the concept of Database Security Paging and you feel that it would be helpful, then please, at least investigate how it will work on your system and what impact it might have or not have on your operations.