A relational database cannot facilitate many-to-many relationships due to its inherent design, which is based on the concept of tables with rows and columns. This design limits the ability to represent complex relationships between entities. For instance, if we consider a scenario where a student can enrol in multiple courses, and a course can have multiple students, a relational database cannot directly represent this many-to-many relationship. Instead, a workaround is required, such as creating a third table to act as a bridge between the two tables, which can be time-consuming and complex to manage.

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Transaction Processing

Transaction processing is a computational style generally performed by server computers, which supports interactive applications (apps). Transaction processing is also known as information processing, which divides the work into indivisible and individual operations called transactions. The transaction is a set of tasks; a single task is considered as the minimum processing unit that cannot be divided again.