HOTSPOT
This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.
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Background
You have a database named Sales.
The Customer table includes a column that stores the date for the last order that the customer placed.
You plan to create a table named Leads. The Leads table is expected to contain approximately 20,000 records. Storage requirements for the Leads table must be minimized.
Tables
You need to create triggers on the Orders table that meet the following requirements:
Optimize the performance and data integrity of the tables.
Display a custom error if a user attempts to create an order for a customer that does not exist.
In the Customers table, update the value for the LastOrderPlaced field.
Complete all actions as part of the original transaction.
In the table below, identify the trigger types that meet the requirements.
NOTE: Make only selection in each column. Each correct selection is worth one point.
Hot Area:
All actions can be done inside a single instead of trigger on the Orders table. If you want you can also create an after insert trigger on the Orders table which updates the Customers table. Multiple solutions are possible.