How to determine non-normalized product models

[_lcrsrms_]

Hi, Community.

We have a requirement to update model.display names of non-normalized models. I found this Business Rule - Calculate display_name (https://<YOUR INSTANCE>.service-now.com/now/nav/ui/classic/params/target/sys_script.do%3Fsys_id%3Db5...)responsible for updating the model.display name:

function _calculateDisplayName(){
	global.ModelUtils.calculateDisplayName(current);
}

_calculateDisplayName();

I checked calculateDisplayName function. For normalized model, it will call these functions to update the model.display name:

calculateSoftwareModelDisplayName & 

calculateModelDisplayName

For non-normalized ones it will call this function 

calculateDefaultDisplayName

ModelUtils.calculateDisplayName = function(model){
	var modelClass = model.sys_class_name.toString();
	if (modelClass === 'cmdb_software_product_model' && GlidePluginManager.isActive('com.snc.sams')) {
		new SAMPSWModelUtil().calculateSoftwareModelDisplayName(model);
	} else if (GlidePluginManager.isActive('sn_hamp') && sn_hamp.HAMConstants.MODEL_TYPES.indexOf(modelClass) > -1){
		sn_hamp.HAMUtils.calculateModelDisplayName(model);
	}
	else {
		global.ModelUtils.calculateDefaultDisplayName(model);
	}
};

I've already updated 

calculateDefaultDisplayName according to our needs.

ModelUtils.calculateDefaultDisplayName = function(model){
	//var values = [model.manufacturer.getDisplayValue(), model.name, model.version, model.edition];
	var values = [model.manufacturer.getDisplayValue(), model.name, model.model_number];
	model.display_name = ModelUtils.generateDisplayName(values);
};

My next action step is to come up with Fix script to update non-normalized model.display name to "Manufacturer + model.name + model.number", can you assist on how we can extract those records in cmdb_model table?

Thank you in advance!