mysql storage

Only to learn the MySQL of the simple operation of adding and removing, recently listened to the MU class network "and MySQL 0 distance contact" https://www.imooc.com/learn/122, finally talked about the MySQL storage engine, has not touched before,

First, what is the storage engineLibrary ===> folder created in MySQLTable ===> files created in the libraryThere are different types of files that we use to store data in real life, and each file type corresponds to a different processing mechanism:

MySQL has two storage engines:InnoDB and MyISAM, and the following table is a simple comparison of the two engines MyISAM InnoDB The difference in composition: Each myisam is stored as three files on disk.

MySQL has two storage engines: InnoDB and MyISAM, and the following table is a simple comparison of the two engines MyISAM InnoDB The difference in composition: Each myisam is stored as three files on disk.

Storage Engine is a major feature of MySQL, learning MySQL must understand it, know its various engines differences, how to choose and use the right. So it's a brief introduction.1. Look at the types of engines supported by the system, such as the

   One, software preparation coreseek4.1 (includes the latest version of Coreseek Beta and mmseg, and test packages "built-in Chinese word segmentation and search, Word segmentation, MySQL data source, Python

PrefaceIn the database is a sheet of inextricably linked tables, so the table design is good or bad, will directly affect the entire database. While designing the table, we will focus on one issue and what storage engine to use. Wait a minute,

1 The concept of the MySQL storage engine The data in MySQL is stored in files (or memory) in various different technologies, using different storage mechanisms, indexing techniques, locking levels, and ultimately providing a wide range of

This blog summarizes the process of writing MySQL storage functions (function), debugging ideas, summaries, and references.0. PreparationBuild a test databaseCREATE DATABASE IF not EXISTS ' Funcdemo ';1. WriteFirst write the function framework and

The storage engine is the MYSQL component that handles SQL operations for different table types. InnoDB is the default, most versatile storage engine, and is also the official recommended storage engine, unless some specific cases are used. The

MySQL official storage engine more common storage engines are: Innodb, MyISAM, Memory, Archive, NDB, BDB, third-party more famous: Tokudb, Infobright, INNFINIDB, XtraDB (InnoDB enhanced version)The official storage engine features a comparison

Day02The MySQL key value (key) # #设置在字段上, which constrains how to assign a value to a field.Normal indexUnique Indexes UniquePrimary KEY Primary KeyFOREIGN key foreign keyFull-Text Index fulltext+++++++++++++++++++++++++++++++++++1.1 Use of index

One, the MySQL storage engineFull engine description or look at the Official document: http://dev.mysql.com/doc/refman/5.6/en/storage-engines.htmlHere are some of the main engines1. InnoDB Storage EngineInnoDB is the default transactional engine for

The storage engine is located on the third tier of MySQL's logical architecture, responsible for storing and extracting data from MySQL. There are many MySQL storage engines, and different storage engines have different ways of saving data and

1. What is a storage engine?A relational database is a data structure for storing and organizing information that can be interpreted as a table of rows and columns, similar to the form of spreadsheets in Excel. Some tables are simple, some tables

MyISAM Storage EngineMySQL system tables Many use the MyISAM engine Transaction not supported Table-level lock, update data on table lock Reads and writes are blocked, but read is not blocked The cache caches only the index,

Transaction concepts and Storage engines1.0 Why business?Let's take a look at a scenario, Bank transfer remittance:Robin Li and Zhou Hongyi fight every day, now let Li give Zhou 祎 transfer money 1000 yuanDesign the following tableAccount tableNumber

What is a MySQL databaseTypically, a database is a collection of data, and a database can be a collection of files on a memory or a collection of some memory data.What we usually call MySQL database, SQL Server database and so on is actually a

[Mysql] storage and optimization of text blob large fields in InnoDB Storage engine, innodbblob Recently, during database optimization, we can see that some tables use text or blob fields in design, and the storage space of a single table has

Slow Mysql storage write speed analysis, slow mysql write speedProblem background description: Execute SQL statements in MySQL, such as insert, which is slow and may be just a row of data insertion. The data volume is small, but it takes a lot of