You could check the 'Source' column from "Inv_InstalledSoftware"
SELECT * FROM Inv_InstalledSoftware
https://support.symantec.com/en_US/article.HOWTO84082.html
1 – Msi scanner
2 – Inventory rule
4 – File list
8 – Add Remove programs entry
16 – Patch
32 – Server
64 – “Software Catalog Data Provider” using the rules provided by PC-Ware
See also
https://www.symantec.com/connect/forums/invinstalledsoftware-source-column