PHP

Understanding: LVM is short for logical disk volume Management (LogicalVolumeManager). It is a mechanism for managing disk partitions in Linux, LVM is a logical layer built on hard disks and partitions to improve the flexibility of disk partition

When designing a database, I want to install the EA software to see if I can use EA to draw an ER model. The results show that not only can be painted, but also can be used to design a whole set of databases (generate SQL scripts ). The following

One-way replication environment from ORACLE to mysql using goldengate: I use the VBOX virtual machine, a host that has installed the ORACLE database and GOLDENDGATE. The other one only installs the ORACLE database. Configure the database environment,

Today, we want to learn how to use MySQL commands to manage accounts. We all know that MySQL commands can complete various tasks in actual applications, the following article describes how to manage accounts using MySQL commands. In the manual, the

For oracle restoration, the most important data structure is onlineredolog (online redo log). Online redo log contains at least two pre-allocated files used to store database changes. Online redo logs record changes in data files. What is the role

The following articles mainly introduce the actual operations of MySQL commands frequently used in MySQL databases, including how to correctly connect to the MySQL database on the local machine and how to change the password correctly, the following

The following article describes how to import Access-related data to the Mysql database. We all know that when creating a website, we often need to import and export some data to Mysql for processing. In Mysql databases, there are generally two ways

When I first read the Mongodb getting started manual, I saw mapreduce. It was so difficult that I ignored it directly. Now, when I see this part of knowledge again, I am determined to learn it. 1. concept description: MongoDB's MapReduce is

Author: zhanhailiang Date: 2014-12-021.INFOinfo command returns server-related information, including: server: GeneralinformationabouttheRedisserverclients: Clientconnectionssectionmemory: Memoryconsumptionrelatedinformationpersistence:

In the SQL environment, both Catalog and Schema are abstract concepts. They are mainly used to solve naming conflicts. A database system contains multiple Catalog, and each Catalog contains multiple schemas, each Schema contains multiple database

I hope thisanewday! Before reading the code, I think you should first sort out your mood and let me say a few words: first, I hope you will read this blog in the early morning and then start operations, if you only read the blog and do not compare

Atitit. software GUI button and dashboard -- db database zone -- Solution to mysqlsql error import: Keyword: after intercepting a text file, check the prompt that max_allowed_packet restricts TargetServerVersion: 505243 mysql max_allowed_packet

In the data warehouse field, there is a concept called Transactionfacttable, which is generally translated into "transaction fact tables ". Transaction fact tables are one of the three basic types of fact tables in the data warehouse for dimensional

UML, as a design tool, focuses on practice, and this is inseparable from nine types of diagrams. drawing is done after watching the video. When I first started to draw a picture, my head was broken, I don't know where to start, so I learned the

Recently, we want to restore the data of multiple MySQLServer instances backed up using xtrabackup to another MySQL server and start multiple instances using different ports as the review environment. Recently, we want to restore the data of

Previously, when I was studying and writing documents about the data center charging system, I wrote this article about the concept design model ERTU of the data center Charging System database. Now I am in the reconstruction phase of the individual

How can I use PHP and MySQL to create personalized website pages? Paging plays an important role in any Web application, where there is enough big data to be divided into pages. It not only looks neat, but also increases the loading time of a

The following articles mainly describe the actual application of the MySQL storage engine and the unique characteristics of the main storage engines in the MySQL database, I hope that you will be helpful when selecting the database storage engine

V. MongoDB import, export, backup, recovery, user authorization 1: Data export, data import as a DBA (Administrator), often encountering the need to import and export data, the following describes the utility (included): 1. import data to export csv

2nd part of Database SQL language database maintenance for some large software products, once commercial, will inevitably store a lot of user information, this is the database used by the product (hereinafter referred to as the Business Database) it