Specifications

Keri Systems, Inc. Doors

Users Guide

01914-007 Rev. 5.5 Section 7: Reporting 7-23

3.3 Boolean Links

Boolean links are used to link simple expressions together to create complex expressions where several

conditions must be met before data should be included in a report. Since a link cannot be done until

there are at least two expressions, the link field does not become active until at least one expression has

been entered into the Search Expression field. There are four types of Boolean links used by the Doors

program.

• AND

•OR

• AND...NOT

• OR...NOT

AND

An AND link allows operator to link two search expressions together so that as event data is being

reviewed for a report the data must meet the criteria in both expressions to be included in the report.

For example, an AND link consisting of (Date>=07/04/1998@00:00

AND Date<=07/04/1998@23:59)

AND Event=Access Denied

would filter event data and create a report that displays only the Access

Denied events that occurred on July 7, 1998. The search expression generated by this link appears in

Figure 7-28.

Figure 7-28: AND Boolean Link Sample

An OR link allows operator to link two search expressions together so that as event data is being

reviewed for a report the data must meet the criteria in either expression to be included in the report.

For example, an OR link consisting of (Date>=12/24/1998@00:00 AND Date<=12/24/1998@23:59)

OR (Date>=12/25/1998@00:00 AND Date<=12/25/1998@23:59)

would filter event data and create a

report that displays all events that occurred on either December 24, 1998 or December 25, 1998. The

search expression generated by this link appears in Figure 7-29.

Figure 7-29: OR Boolean Link Sample