Where a DBMS is not required
Basic terms and concepts of database systems
This section discusses the following concepts: the difference between a database and a database management system, two fundamental requirements that every computer-based database system should meet, the difference between desktop and server-based systems, and a brief explanation of three types of databases .
Database versus database management system
Basic requirements for computerized database systemsTwo fundamental requirements are usually placed on database systems that are IT-based: Avoid redundancy as well as ensuring a maximum Data integrity. Note that the typically expected criterion of 'quick access', which is usually typical for IT, has expressly not been discussed here. This criterion represents one of the decisive differences to any form of a paper-based archive, for which individual keywords with page references may have been laboriously cataloged. However, it will become clear in the course of further explanations that the rapid search access is at most a consequence of the above requirements. If the data is not stored without redundancy or if the data integrity is not ensured with every processing, then every subsequent evaluation also delivers inadequate or incorrect results.
Desktop versus server-based database management systemsThere are three different types of database management systems:
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