In spite of the fact that the vast majority of computer systems use a lower number of levels than what is prescribed by the OSI model, this is not always the case. Why should one use fewer layers if there are benefits to doing so? Which issues might be brought about by employing a structure with a lower number of layers?When dealing with frequent repeat patterns, a low or high reuse factor is desirable. Why not provide an example? / Pourquoi ne pas donner un exemple?

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Types of database architectures

A Database Architecture represents the Database Management System’s (DBMS) design (schema). The DBMS architecture makes it easy to understand the components involved in the database system and their relations. The DBMS architecture may vary based on the system on which it runs. Some systems contain both client and server machines whereas some run only on a server machine. Based on the architecture, the system can be classified as centralized, decentralized, or hierarchical.