Itqualityassurance
- How do you prevent duplicate data entry for two fields?
- What causes duplicate entries?
- How do I stop inserting duplicate records?
How do you prevent duplicate data entry for two fields?
In the Navigation Pane, right-click the table that contains the field, and then click Design View. Select the field that you want to make sure has unique values. In the Field Properties pane at the bottom of the table design view, on the General tab, set the Indexed property to Yes (No duplicates).
What causes duplicate entries?
Data aggregation and human typing errors are some of the sources of duplicate data. Customers may also provide a company with different information at different points in time. Hence, businesses should consider removing duplicate records from their Database.
How do I stop inserting duplicate records?
You can use a PRIMARY KEY or a UNIQUE Index on a table with the appropriate fields to stop duplicate records. Let us take an example – The following table contains no such index or primary key, so it would allow duplicate records for first_name and last_name.
