Relational Operators
You can use relational operators to compare the value of two fields or you can compare the value of a field with a constant. Integration Server provides two types of relational operators: standard and lexical.
Standard Relational Operators can be used in expressions and filters to compare the contents of fields (variables) with other variables or constants.
Lexical Relational Operators can be used to compare the contents of fields (variables) with string values in trigger filters.
Note:
You can also use standard relational operators to compare string values. However, filters that use standard relational operators to compare string values will not be saved with the trigger subscription on Broker. If the subscription filter resides only on Integration Server, Broker automatically places the document in the subscriber’s queue. Broker does not evaluate the filter for the document. Broker routes all of documents to the subscriber, creating greater network traffic between Broker and Integration Server and requiring more processing by Integration Server.