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Features of a relational database include:

• reduction in, or elimination of, data duplication
• copes with relationships between pieces of data (for example, a record in one table may be linked to many records in another table)
• easy to change data format
• data can be added or removed easily
• easy to modify (edit) data
• easy to maintain data integrity
• access to data can be restricted
• can monitor who has done what, and when, with data (audit trail for changes)
• data can be shared easily and multiple users can access it at the same time.