Explanation
The advantage of a flat file is portability. Portability is the ability of a file or a system to be easily transferred or used on different platforms or devices. A flat file is a type of file that stores data in plain text format with fixed fields and records. A flat file can be easily transferred or used on different platforms or devices, as it does not require any special software or hardware to read or write the data. A flat file can also be easily imported or exported by various applications or databases. A flat file does not have a variety of data, as it only stores data of one type or entity, such as customers, products, or orders. A flat file does not support relationships, queries, or calculations on the data. A flat file does not have scalability, as it has limitations on the size and complexity of the data that it can store. A flat file can become large, slow, or redundant as more data is added. A flat file does not support multiple concurrent users, as it does not have any locking or transaction mechanisms to prevent data conflicts or errors. A flat file can only be accessed by one user at a time, or by multiple users in read-only mode. References: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 6: Database Fundamentals