interrelated SQL and so on. MySQL is more suitable for simple OLTP applications with business logic. For PostgreSQL, regardless of the business logic is simple or complex, OLTP or OLAP load, PostgreSQL can support, also have a very mature products, many well-known OLAP database products such as Greenplum, AWS Redshift, etc. are the base Developed in PostgreSQL. The query optimizer for PostgreSQL is very powerful, and for the three Table association m
[CSDN report] Some time ago, an article was published on Gigaom: whatunbelievablenewservicesdoesAmazonhaveontap? Now we know at least one of them, Amazon's incredible new service, Redshift data warehouse service, points to Oracle, IBM, and Teradata.
[CSDN report] Some time ago, an article on Gigaom was published: what unbelievable new services does Amazon have on tap? Now we know at least one of them, Amazon's incredible new service,
Official Document: Http://docs.aws.amazon.com/redshift/latest/dg/t_Defining_constraints.htmlredshift does not provide uniqueness, primary foreign key constraints, but provides non-null constraintsIf the effect of a constraint needs to be used before the table is built, you need to ensure the legitimacy of the data itself.See also the CREATE syntax http://docs.aws.amazon.com/redshift/latest/dg/r_CREATE_TABLE
Tags: and redshift BSP Select HTTPS based solution Add tarAmazon Redshift is a fast, fully managed, petabyte-scale data Warehouse that enables you to cost-effectively and easily analyze all your data with existing business intelligence tools. From a minimum of 0.25 USD per hour (without any obligation) up to $ (PB) per terabyte/TB/year, the cost is less than one-tenth of the traditional solution. Customers
1.
Back up database
Concept: it refers to backing up all data files and control files of the database, and also backing up parameter files and password files.
Note: When backing up a database, do not back up redo logs.
1.1
Consistent backup
Concept: Database Consistency backup refers to the method for backing up all data files and control files after the database is disabled. When the SHUTDOWN command is u
1. System Backup
Based on the degree of preparation of the backup system, it can be divided into three categories: Cold backup, warm backup and hot backup.
1.1 The cold backup system is not installed or configured to the same or s
Tags: sqlAccident background:suddenly the database is corrupted for no apparent reason, and differential or transaction log backups 3 point will be automatically done, then how to 2 Point to 2 Point + data recovery between the ? this needs to be restored by backing up the tail log. Environment Description:A company has installed aSQL Serverdatabase, in order to ensure that the database can be repaired in the event of a failure, the administrator has done ba
Cold backup:
Cold backup is completed in archive mode.
Close Database
Back up all data files, initialization parameter files, control files, redo logs, and archived redo logs.Parameter file: Show parameter spfile;Control File: Select * from V $ controlfile;Redo log file: Select * from V $ logfile;Archive log files: Select sequence #, first_time v $ loghist;
Hot Bac
1. Current mainstream backup technologies
Data backup:
That is, the data is backed up, the data to be stored is copied directly, or the data is converted to an image and saved on the computer. Such as Ghost and other backup software, CD burning and Mobile Disk Storage.
This model is easy to understand and can be divided into two types: file-by-file and image. One
1.
backing up a databaseConcept: A backup of all data files and control files for a database, as well as the backup of parameter files and password filesNote: Do not back up the redo log when you back up the database.1.1Consistent backupConcept: Database Consistent backup refers to the method of shutting down all data files and control files for a database
Differential backup: Back up data based on full backup. Because the tar command cannot implement differential backup, this article explains how to use the dump and restore commands. Of course, the dump and restore commands can also implement full backup and Incremental backup
"Operating System Error 5 (Access denied)" is displayed during SQL SERVER database backup ). The backup database is being terminated abnormally ." Wrong solution: database backup. backup
"Operating System Error 5 (Access denied) occurs when the SQL SERVER database is backed up ). The
The way data is backed up with full backups, differential backups, and incremental backups, what is the difference between these three ways of backing up, and how do you choose them in a specific application? This article gives an introduction to these questions.I. Brief introduction of Backup mode1. Full backupBacks up all selected folders, and does not rely on the archive properties of the files to determine which files to back up. During the
I. OverviewBackup and recovery is critical to system maintenance. Unreasonable backups and restores can put your data at risk of loss. Many users are unaware of this risk when they lose important data. Recovering data from this situation will be time-consuming and difficult. So we should learn from the mistakes of others and make sure that your system is protected. Consider some questions first: When do backups take place? If you can accept one weeks of data loss, then a weekly
Label:Original address: HTTP://WWW.TUICOOL.COM/ARTICLES/RZRNQ2 Xtrabackup Introduction Percona Xtrabackup is open source free MySQL database hot backup software, it can be InnoDB and XTRADB storage Engine database non-blocking backup (for MyISAM backup also need to add a table lock). Xtrabackup supports all Percona servers, MySQL, mariadb, and drizzle. Xtrabackup
Xtrabackup backup of large databases (full backup and Incremental Backup)
Xtrabackup
Xtrabackup is a free Database Hot Backup Software open source by percona. It can back up InnoDB databases and XtraDB storage engine databases in non-blocking ways (Table locks are also required for MyISAM
Rman backup method-Incremental backup and rman backup method incremental
Usage type: the system load is concentrated in a certain period of time, such as 8 hours during the day, and is usually idle at night. Therefore, data can be backed up at night.
It corresponds to full-Database Backup:
Http://blog.csdn.net/jacson_b
Basic concepts:
Full backup: a complete backup;Differential backup: The above full backup is a basic backup;Incremental Backup: The above full backup or Incremental
Tags: http os io using strong ar file Data divPercona xtrabackup backup MySQL large database (full and incremental backup) Article directory[Hide]
Xtrabackup Introduction
Xtrabackup Installation
Xtrabackup Tools Introduction
Innobackupex How to use
Full Backup and restore
Incremental back
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