Editing Bell–LaPadula model (section)

=== Strong Star Property ===
The Strong Star Property is an alternative to the *-Property, in which subjects may write to objects with only a matching security level. Thus, the write-up operation permitted in the usual *-Property is not present, only a write-to-same operation. The Strong Star Property is usually discussed in the context of multilevel [[database management system]]s and is motivated by integrity concerns.<ref>{{cite conference
|first = Ravi S. |last = Sandhu
|s2cid = 18270922
|title = Relational Database Access Controls
|book-title = Handbook of Information Security Management (1994-95 Yearbook) |pages = 145–160
|publisher = Auerbach Publishers |year= 1994 }}</ref> This ''Strong Star Property'' was anticipated in the [[Biba model]] where it was shown that strong integrity in combination with the Bell–LaPadula model resulted in reading and writing at a single level.