In sequential files, each data item is stored immediately following the previous one. The data in the file is stored in the order that it is produced. The data is read in the same order that it is stored. You read a sequential file from beginning to end. This results in a compact data storage structure and ease of programming.
The following example uses three files with sequential organization. The first two contain sorted data. They are merged to create the third file. Merging two files lends itself well to sequential organization.