Final answer:
To prevent a DML event from being completed for a record, you can implement record-level security, use triggers in the database, or leverage validation rules in programming languages.
Step-by-step explanation:
To prevent a DML event from being completed for or taking action on a record, you can implement record-level security. This involves defining access controls and permissions that restrict certain users or roles from modifying or deleting specific records. For example, in a database management system, you can set up permissions to allow only certain users or roles to update or delete records in a table, while others may only have read access.
Another method is to use triggers in the database. Triggers are special procedures that get automatically executed when certain events occur, such as before or after a record is modified. By implementing a trigger that checks certain conditions, you can prevent a DML event from being completed or taking action on a record. For instance, you can create a trigger that checks if a record meets certain criteria before allowing an update or delete operation.
Additionally, some programming languages and frameworks offer methods for implementing validation rules before saving or updating records. These validation rules can be used to check if a record meets specific criteria before allowing modifications. By adding custom validation logic, you can prevent a DML event from being completed if the record doesn't meet the required conditions.