Security rule matchers define the criteria that the Rule Engine uses to identify incoming SQL requests that receive the rule action.
Select a security rule matcher based on the method you want the Rule Engine to use to identify SQL statements. For example, to restrict access to a customer table, use the From Clause Object rule matcher with the Block Statement processing action. Use the Text rule matcher to identify a specific text string within an SQL request or the symbol matcher to match a variable value, such as the session or client information. To apply the security rule to all incoming requests, use the Any matcher.