POSTGRES-XL is a fully acid-compliant, open-source, easy to scale, multi-tenant security. Support share-nothing; Support massive data parallel processing-mpp (massively Parallel processing). is not very similar to Greenplum. Host Assignment3 host,
PostgreSQL provides developers with a rich set of tools to manage concurrent access to data. Internally, data consistency is maintained by using a multi-version model (multi-version concurrency control, MVCC). This means that each SQL statement sees
first, what is POSTGRES-XLXL means: Extensible Lattice, can be extended lattice, will be the PostgreSQL application on multi-machine distributed database visualization expression.POSTGRES-XL is a full-acid, open-source, scalable, multi-tenant secure,
Background: Modifying the PG kernel, when creating a table, the table name cannot have the same name as the current user name.First we know that definerelation this function is the function that eventually creates the table structure, the main
Function Introduction
POSTGRES-XC/XL/X2 is an open source project. It provides a multiple-master synchronous, transparent, PostgreSQL cluster solution. Unlike other cluster tools, it has a strong scalability when writing data, and introduces the
BackgroundPostgreSQL logical backup, refers to online backup database data, DDL output as SQL statements, data can be in the form of SQL statements or fixed separators (row format) output.
The backup does not affect the DML operation of the Backup
Detailed steps for creating the ipvs-XL Cluster
Recently, the company's business needs to use ipvs-XL clusters. There is not much network information about this part of knowledge. After a period of query and various detours, the installation was
PostgreSQL is a very complex object-relational database management system (ORDBMS), and is currently the most powerful, feature richest and most complex free software database system.os:centos6.5 x64ip:192.168.85.130Hostname:vm2.lansgg.comPG Version:
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