Yes, it is possible to change the default database table names
To do this you should rename all mentions of table names in the script which creates the DB object in your project's database (I guess it is SQL Server).
Open the RadDesigner.sql
file from the telerik\Sitefinity2.6\ProjectManager\Database
folder and do the global replace for the tables you want to rename. When you create a Sitefinity
project after that, you will create a DB with new table names.Note:
There are embedded queries in some user controls and table names in them, so they should be changed too if you are going to use those user controls.
Please let me know if you have additional questions.