high-water mark - definizione. Che cos'è high-water mark
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Cosa (chi) è high-water mark - definizione

Low watermark (computer security); Low watermark; High watermark (computer security)

high-water mark         
  • High water marks of [[Arno]] river ([[Florence]]) floods on August 13, 1547 (left) and November 3, 1844 (metal plate on the right). Photographed in Via delle Casine.
  • High water mark memorial at [[Lake Missoula]], [[Montana]], [[United States]]
  • High water mark sign in [[Bisset Park]], [[Virginia]], [[United States]]
  • The strandline at [[Ringstead Beach]], [[Dorset]], [[United Kingdom]]
THE MAXIMUM WATER LEVEL OF A BANK OR SHORE
OWHM; OHWM; High watermark; Strand line; Mudline; Ordinary high water mark; Strandline; High-water mark; Highest water level; Strandlines; High water marks
also high water mark
1.
The high-water mark is the level reached in a particular place by the sea at high tide or by a river in flood.
N-SING: the N
2.
The high-water mark of a process is its highest or most successful stage of achievement.
This was almost certainly the high-water mark of her career...
N-SING: with supp, oft N of/for n
high-water mark         
  • High water marks of [[Arno]] river ([[Florence]]) floods on August 13, 1547 (left) and November 3, 1844 (metal plate on the right). Photographed in Via delle Casine.
  • High water mark memorial at [[Lake Missoula]], [[Montana]], [[United States]]
  • High water mark sign in [[Bisset Park]], [[Virginia]], [[United States]]
  • The strandline at [[Ringstead Beach]], [[Dorset]], [[United Kingdom]]
THE MAXIMUM WATER LEVEL OF A BANK OR SHORE
OWHM; OHWM; High watermark; Strand line; Mudline; Ordinary high water mark; Strandline; High-water mark; Highest water level; Strandlines; High water marks
¦ noun the level reached by the sea at high tide, or by a lake or river in time of flood.
?a maximum recorded level or value.
high water mark         
  • High water marks of [[Arno]] river ([[Florence]]) floods on August 13, 1547 (left) and November 3, 1844 (metal plate on the right). Photographed in Via delle Casine.
  • High water mark memorial at [[Lake Missoula]], [[Montana]], [[United States]]
  • High water mark sign in [[Bisset Park]], [[Virginia]], [[United States]]
  • The strandline at [[Ringstead Beach]], [[Dorset]], [[United Kingdom]]
THE MAXIMUM WATER LEVEL OF A BANK OR SHORE
OWHM; OHWM; High watermark; Strand line; Mudline; Ordinary high water mark; Strandline; High-water mark; Highest water level; Strandlines; High water marks

Wikipedia

High-water mark (computer security)

In the fields of physical security and information security, the high-water mark for access control was introduced by Clark Weissmann in 1969. It pre-dates the Bell–LaPadula security model, whose first volume appeared in 1972.

Under high-water mark, any object less than the user's security level can be opened, but the object is relabeled to reflect the highest security level currently open, hence the name.

The practical effect of the high-water mark was a gradual movement of all objects towards the highest security level in the system. If user A is writing a CONFIDENTIAL document, and checks the unclassified dictionary, the dictionary becomes CONFIDENTIAL. Then, when user B is writing a SECRET report and checks the spelling of a word, the dictionary becomes SECRET. Finally, if user C is assigned to assemble the daily intelligence briefing at the TOP SECRET level, reference to the dictionary makes the dictionary TOP SECRET, too.

Esempi dal corpus di testo per high-water mark
1. "We consider them the high water mark of recent Games," he said.
2. Still, as Mr King remarks, that effect too may have reached its high water mark.
3. It would prove the high water mark of the Blair-Clinton era of Middle East peacemaking.
4. His book was published in 1'72, close to the high–water mark for British economic equality.
5. A line indicating the high–water mark could be seen about 8 feet above the floor.