Which of the following is considered the oldest type of data

Which of the following is considered the oldest type of database system?

A. Hierarchical

B. Network

C. Relational

D. Object-oriented

Solution

A. Hierarchical databases link records in a tree structure so that each record type has only one owner. Hierarchical databases date from the information management systems of the 1950s and 1960s. Answer B is incorrect because network databases were not the first. Answer C is incorrect because although relational databases are the most widely used, they were not the first. Answer D is incorrect because they were not the first but were designed to overcome some of the limitations of relational databases