Database system and method for compiling serial and parallel database query execution plans
An execution plan and database technology, applied in the field of database systems, can solve problems such as insufficient effectiveness and low efficiency
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[0027] Figure 1A A database system 100 for executing serial and parallel query execution plans provided by an embodiment is shown. As shown, the database system 100 includes an application 102 in communication with a coordinating node 104 , which in turn communicates via one or more communication networks 108 with a plurality of data storage nodes 106A- 106N. Additionally, each of the data storage nodes 106A-106N includes a corresponding plurality of computer-readable memories 107A-107N, processors 108A-108N, and execution engines 110A-110N.
[0028] In one embodiment, data is stored in the memories 107A-107N in the form of database tables. Furthermore, in various embodiments, different ones of the memories 107A- 107N may store different partitions of such database tables in certain use case scenarios. Additionally, in use cases employing smaller tables, the corresponding data may be replicated and stored in multiple (or all) memories 107A-107N.
[0029] In a possible embod...
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