I am trying to develop a report that shows accounts that does not have a specific object data associated. 

My accounts data is populated with building data that we survey and I have objects created with specific fields for each survey we do I need to pull a report on a daily basis to see what buildings that wasn’t surveyed and that was surveyed. I do have a trigger created for duplicates.  Each object has a look up field for account ( Building). Any thought on how I should go about this is much appreciated.
 
 

I am trying to write a trigger on a custom object that detects duplicates and resets the trigger every 24 hours.  Custom object has a lookup field that looks up accounts, I want to make sure users dont select the same account and apdate the same account within a 24 hour period as I use this object as data collection tool.  

I am trying to write a trigger on a custom object that detects duplicates and resets the trigger every 24 hours.  Custom object has a lookup field that looks up accounts, I want to make sure users dont select the same account and apdate the same account within a 24 hour period as I use this object as data collection tool.