joinstrategi
Joinstrategi refers to the set of techniques a database management system uses to implement join operations in a query. It encompasses the choice of join algorithms, the order in which multiple relations are joined, and decisions about materialization and pipelining of intermediate results. The aim is to minimize estimated cost, typically measured in I/O and CPU time, while producing the correct result.
Common join algorithms include nested loop join, hash join, and sort-merge join. Nested loop join is simple
Join order selection is a key part of join strategy because the size of intermediate results can
In distributed or parallel databases, join strategies may involve repartitioning or broadcasting data across workers, or