The virtual table type is computed at runtime by the system. A virtual table contains data and is accessed like other tables, but we cannot modify either the definition or the contents of a virtual table. We can think of virtual tables as system data that's presented in the form of a table so that it is readily available to AL code. Some of these tables (such as the Database File, File, and Drive tables) provide access to information about the computing environment. Other virtual tables (such as the Table Information, Field, and Session tables) provide information about the internal structure and operating activities of our database. A good way to learn more about any of these tables is to create a list or card page that's bound to the table of interest. Include all of the fields in the page layout, Save the page, and Run it. We can then view the field definition and data contents of the target virtual table.
Some virtual tables (such as Date and Integer) provide...