A distributed database (DDB) is managed by a distributed database management system (DDBMS) that keeps track of how the data is distributed as well as provides the usual DBMS functions. This chapter discusses the extended library scenario. A first-level E-R model for the extended library ...
英文: Database Management...中文: 元件库管理...英文: Based on the superiority of distributed database in highway project management, its distributed database is developed in the paper, including solution of data division and redundancy, design of intercurrent mechanism, system structure design and...
A software organization which provides for data definition and manipulation in a distributed data base system is presented by describing the functions and interrelations of the component processes; with its methodology for access, the physical location of the data is transparent to the user program. ...
CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene. iotelasticsearchsqldatabasebig-datatime-seriesanalyticsdbmspostgresqldistributedolapdistributed-databaseluce...
In Distributed Database System, data is physically stored across several sites, and each site is typically managed by a DBMS capable of running independent of the other sites. In contrast to parallel databases, the distribution of data is governed by factors such as local ownership and increased...
distributed database, which consists of data that are partitioned and/or replicated among interconnected server sites. The primary objective of a distributed DBMS is to hide data distribution so that it appears as one logical database system to the clients while providing better performance or ...
index的log也去掉之后,in-memory DBMS还需要disk I/O的地方大概就只剩下snapshot以及WAL了。关于DBMS的transaction是什么,从目的来说,可以简单看成对整个database的一小部分进行修改的过程。其ACID可以拆开来看:A需要abort+recovery机制,C不清楚,I用latch等shared memory communication提供,D就是WAL+snapshot。A和I...
The system has its component parts physically stored in a number of distinct real databases at a number of distinct sites. Each site has its own local real databases, its own local users, its own local DBMS and transaction management software including its own local locking, logging, recovery,...
All Oracle databases in a distributed database system use Oracle's networking software, Net8, to facilitate inter-database communication across a network. Just as Net8 connects clients and servers that operate on different computers of a network, it also allows database servers to communicate ...