What is a unique index in access?

Question

You can prevent duplicate values in a field in an Access table by creating a unique index. A unique index is an index that requires that each value of the indexed field is unique.

How do you create a unique index in Access?

Anyway, here's how you create a multi-column unique index on an MS access database.1Open the table in design mode, and Design, select Indexes.2Create a new row and enter a value in the Index Name cell,3Choose the first column from the drop down menu.4Add a new row and leave the Index Name cell blank.

What is a unique field in Access?

Remarks. Use the UniqueRecords property when you want to omit data based on entire duplicate records, not just duplicate fields. Microsoft Access considers a record to be unique as long as the value in one field in the record differs from the value in the same field in another record.

What is an index in Microsoft Access?

What is an index? You can use an index to help Access find and sort records faster. An index stores the location of records based on the field or fields that you choose to index. After Access obtains the location from the index, it can then retrieve the data by moving directly to the correct location.

Expert · Answer