The main design issues in parallel relational database architectures that are applicable to disjunctive databases are then reviewed. Finally, we investigate the sources of parallelism in DDDB and present a potential architecture for a parallel DDDB system....
[5] A. Behm, V. R. Borkar, M. J. Carey, R. Grover, C. Li,N. Onose, R. Vernica, A. Deutsch, Y. Papakonstantinou, and V. J. Tsotras. ASTERIX: Towards a Scalable, Semistructured Data Platform for Evolving-world Models. Dist. Parallel Databases, 29(3), 2011. [6] R. Chaike...
Aside from stripping away these features, NoSQL databases usually take advantage of parallel processing across a number of nodes, which also enhances recoverability through various forms of data redundancy. Aside from SQL, there is another unfounded excuse given for the poor performance of OldSQL tra...
Structured Computations Optimized for Parallel Execution (SCOPE) Microsoft’s的数据分析平台,结合parallel database和mapreduce两个系统。 SCOPE是给Cosmos开发的,应用于append-only文件系统。 SAP HANA 分布式内存数据库,处理AP和TP业务。一个AP的MPP数据能产生大量的中间结果集。并发高的话能把内存吃掉,因此需要spill...
This chapter describes the architectural components that Oracle provides for Oracle Parallel Server processing. These are the components that are in addition to the components for single-instances; they are thus unique to Oracle Parallel Server. Some of these components are supplied with the Oracle ...
Data and index information can then be read in parallel by the multiple disk heads. For example, if Table_A on filegroup f1 and Index_A on filegroup f2 are both being used by the same query, performance gains can be achieved because both filegroups are being fully used without conten...
For a parallel query, consider reducing the max degree of parallelism Option. In a heavily loaded system under memory pressure, queries with merge join, sort, and bitmap in the query plan can drop the bitmap when the queries don't get the min...
And they often require algorithms such as MapReduce that operate in parallel across the entire dataset. The query results are stored separately from the raw data and used for further querying. One drawback to this approach is that it introduces latency. If processing takes a few hours, a ...
Open Computing Language (OpenCL) is an open standard for parallel programming of heterogeneous platforms consisting of CPUs, GPUs, and other hardware accelerators found in supercomputers, cloud servers, personal computers, mobile devices and embedded platforms. OpenGL Shading Language(GLSL) is a High ...
We assume an application domain as our starting point for the domain core of a software architecture.Figure 9.3depicts this layered structure, as we saw earlier. These three layers are, from bottom to top, common abstractions of the business domain, the set of different parallel product domains...