Based on an analysis of a company's needs, a database should be installed so that there is one parent for each record, with optional nodes, forming subtrees.

A distributed database system allows data to be stored and accessed across several machines or locations, providing a seamless integration of data management. This approach enhances data redundancy and access speed, making it the ideal choice for scenarios where data needs to be distributed.

While cloud databases can indeed be distributed and accessed from various locations, the term "cloud" refers more broadly to the delivery model of computing resources over the internet rather than the specific architectural design of the database itself. A cloud database could be either distributed or centralized, depending on its configuration.

Relational databases manage data in structured tables and are typically designed for centralized storage. Although some relational database systems can be configured to operate in a distributed manner, they are not inherently designed for data distribution across multiple locations without additional frameworks or technologies.