Work Stress (?XThe work stress thermometer reflects the intensity of stress experienced by employees on the job at a particular employer, relative to other employers.or example, when all five faces appear smiling, that doesn't mean all employees at that employer are Extremely satisfied, but it does mean a significant majority are Extremely satisfied compared to workers at other employers.
Aleph-naught (aleph-naught, also aleph-zero or the German term Aleph-null) is the cardinality of the set of all natural numbers, and is an infinite cardinal. The set of all finite ordinals, called Ï or Ï 0 (where Ï is the lowercase Greek letter omega), has cardinality .
While NULL really means not set, in the context of this question I believe the above statement is correct. There are a number of reasons for a column to have a NULL value: 1  The column is not appropriate to the sub-type or state of the row.2  The value is not available, or hasn't been recorded in the column.hile NULL really means not set, in the context of this question I believe the above statement is correct. There are a number of reasons for a column to have a NULL value: 1  The column is not appropriate to the sub-type or state of the row.