Application triggers A trigger is a WLanguage procedure automatically called by the HFSQL engine whenever a modification is performed (addition, deletion, modification, ...) on a record of a data file. Server triggers Server triggers are stored procedures executed by the server before or after a write operation performed on a database file... The triggers A trigger is a WLanguage procedure automatically called by the HFSQL engine whenever a modification is performed (addition, deletion, modification, ... WLanguage functions 13 documents