The B-tree structure we studied can be used to create an indexed file. An indexed file contains an index structure to search for data in the file. Each entry in the index contains the data key from...

The B-tree structure we studied can be used to create an indexed file. An indexed file contains an index structure to search for data in the file. Each entry in the index contains the data key from the file and the address of the data record in the file. The index can be created when the file is opened or it can be stored as a separate file on the disk.