Don't have a copy of FileMaker 7, but in newer versions, you bring up the field definitions and double click a field's definition to bring up the field options. One set of field options are validation settings you can set up for that field. In addition, some fields, such as a date field, have built in validation settings.
Those are all field-level validations. What are "record-level" validations? Something to do with ScriptTriggers?
It has nothing to do with script triggers. Note that you are reading documentation about FileMaker 7 and script triggers were first introduced in FileMaker 10.
The only validations I know of are what I referred to in my last post.