CRM/CoreNotecivicrm_noteNotes can be linked to any object in the application.1.1truefa-sticky-note civicrm/note?reset=1&action=add&entity_table=[entity_table]&entity_id=[entity_id] civicrm/note?reset=1&action=view&id=[id] civicrm/note?reset=1&action=update&id=[id] civicrm/note?reset=1&action=delete&id=[id] id int unsigned true Note ID Number 1.1 id true entity_table varchar 64 true Name of table where item being referenced is stored. Reference Type Select note_used_for 1.1 entity_id int unsigned Reference Item EntityRef true Foreign key to the referenced item. 1.1 entity_id entity_table 1.1 index_entity entity_table entity_id 1.1 note text Note and/or Comment. TextArea 4 60 true /Note|Comment/i // 1.1 contact_id int unsigned FK to Contact ID creator Created By EntityRef 1.1 contact_id civicrm_contact id 1.1 SET NULL note_date timestamp 5.36 CURRENT_TIMESTAMP Date attached to the note Select Date activityDateTime created_date timestamp When the note was created. true CURRENT_TIMESTAMP Select Date activityDateTime 5.36 true modified_date timestamp When was this note last modified/edited CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP Modified Date Select Date activityDateTime 1.1 true subject varchar 255 subject of note description Text 60 1.5 privacy varchar 255 Foreign Key to Note Privacy Level (which is an option value pair and hence an implicit FK) 3.3 true 0 Select note_privacy