Distributed Databases Questions
Data fragmentation refers to the process of dividing a database into smaller fragments or subsets of data. This fragmentation can be done based on various criteria such as horizontal fragmentation (dividing the database by rows), vertical fragmentation (dividing the database by columns), or hybrid fragmentation (a combination of horizontal and vertical fragmentation).
Data allocation, on the other hand, involves determining where each fragment of data should be stored within the distributed database. This allocation decision is typically based on factors such as data access patterns, network latency, and load balancing. The goal is to distribute the data fragments across multiple nodes or servers in a way that optimizes performance, minimizes communication overhead, and ensures fault tolerance.