Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In computer science, a record is an instance of a product of primitive data types called a tuple. In C it is the compound data in a struct. Records are among the simplest data structures. A record is a value that contains other values, typically in fixed number and sequence and typically indexed by names. The elements of records are usually called fields or members. For example, a date may be stored as a record containing a numeric year field, a month field represented as a string, and a numeric day-of-month field. As another example, a Personnel record might contain a name, a salary, and a rank. As yet another example, a Circle might contain a center and a radius.

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