On-Net Surveillance Systems, Inc.
NetDVR 6.5
Administration
109
Parentheses can be used to ensure that related terms are processed
together as a logical unit; in other words, they can be used to force a
certain processing order in the analysis.
Example: ( ”User001” OR ”Door053” ) AND ”Sunday”
In the example, the two terms inside the parenthesis will be processed
first, then the result will be combined with the last part of the string.
In other words, the system will first look for any packages containing
either of the terms
User001
or
Door053
, then it will take the results and
run through them in order to see which packages also contain the term
Sunday
.
)
Lets you add an end parenthesis character to the
Event message
include
field.
AND
Lets you add an AND operator to the
Event message include
field.
With an AND operator you specify that the terms on both sides of the
AND operator must be present.
Example: User001 AND Door053 AND Sunday
In the above example, the term
User001
as well as the term
Door053
as well as the term
Sunday
must be present in order for the criterion to
be met. It is
not
enough for only one or two of the terms to be present.
As a rule of thumb, the more terms you combine with AND, the
fewer
results you will retrieve:
Example: Few results match the criterion
User001 AND Door053 AND Sunday
OR
Lets you add an OR operator to the
Event message include
field.
With an OR operator, you specify that either one or another term must
be present.
Example: User001 OR Door053 OR Sunday
