Salesforce Apex concept training. This quickly adds records into a custom object.

RAD-Final-Project-StockItems-DML.cls

// Use this in Execute Anonymous to create 5 Stock Itme records
// where the inventory on hand is less than the minimum stock level

List<Stock_Item__c> itemList = new List<Stock_Item__c>();

for (Integer i = 5; i < 10; i++) {
    Stock_Item__c stockitem = new Stock_Item__c(
    Description__c = 'An item of stock',
    Item_Name__c = ('RAD Item ' + i),
    List_Price__c = (14.99 + (i * 10)),
    Minimum_Stock_Level__c = (50 + (i * 3)),
    Stock_on_Hand__c = (20 + (i * 3))
	);
    
    itemList.add(stockitem);
}

insert itemList;

System.debug('Added ' + itemList);