types of tables

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The realization idea and code of asp.net large file downloading

When our site needs to support downloading large files, if not control may cause users to visit the download page when there is no response, causing the browser to crash. You can avoid this problem by referring to the following code. Using Syst

MySQL Storage engine InnoDB Introduction

Provides MySQL with transaction security (acid-compatible) storage engine with Commit, rollback, and crash recovery capabilities. InnoDB locks the row level and also provides an oracle-consistent, unlocked read in the SELECT statement. These features

Analysis and redesign of the music play app

has been very interested in wireless interaction, this time to practice practicing ~ The analysis based on the iOS platform, selected two representative of the music player, QQ music and Watercress F

Use a variety of block Size in Oracle9i

Oracle   Oracle9i has brought some surprising complexity to the Oracle database engine.   It introduces a number of new internal features, including bitmap free lists, replication based on redo log, dynamic SGA, and a potentially most important featu

How to choose the right MySQL storage engine

MySQL has a variety of storage engines: MyISAM, InnoDB, MERGE, MEMORY (HEAP), BDB (BerkeleyDB), EXAMPLE, Federated, ARCHIVE, CSV, Blackhole. MySQL supports several storage engines as processors for different types of tables. The MySQL storage engin

Introduction to meta data and IL

1.3.2 Meta data Metadata is the data that describes the data. In the context of the CLR, the metadata represents a set of systems consisting of descriptors that include all the items declared or referenced in a module. Because the CLR model is objec

Using WPS Mobile Edition data Validity statistic Student Achievement chart

In real life, when data is entered in the form, it is often necessary to set preconditions to avoid exceeding the data range. This can reduce the wrong input to some extent, mobile office, with the ta

What is online analytical processing (OLAP)

The concept of online analytical processing (OLAP) was first proposed by the father of the relational database, E.f.codd, in 1993, and he also presented 12 guidelines on OLAP. OLAP has aroused a great deal of response, OLAP as a class of products and

Simple test of MyISAM engine and InnoDB engine performance in MySQL

[Hardware configuration] cpu:amd2500+ (1.8G) Memory: 1g/Modern Hard drive: 80g/ide [Software configuration] Os:windows XP SP2 se:php5.2.1 db:mysql5.0.37 Web:iis6 [MySQL table structure] CREATE TABLE `myisam` ( `id` int(11) NOT NULL auto_inc

MySQL Backup and recovery

Discusses MySQL backup and recovery mechanisms, and how to maintain data tables, including the two most important types of tables: MyISAM and Innodb, the version of MySQL designed in this article is 5.0.22. This article describes the use of MySQL wi

The concept of Mysql InnoDB

INNODB provides MySQL with transaction security (acid-compatible) storage engine with Commit, rollback, and crash recovery capabilities. InnoDB locks the row level and also provides an oracle-consiste

MySQL database backup and recovery detailed

This article discusses MySQL's backup and recovery mechanism, and how to maintain data tables, including the two most important types of tables: MyISAM and Innodb, and the MySQL version in this article is 5.0.22. The free backup tools currently suppo

The concept of Mysql InnoDB

INNODB provides MySQL with transaction security (acid-compatible) storage engine with Commit, rollback, and crash recovery capabilities. InnoDB locks the row level and also provides an oracle-consistent, unlocked read in the SELECT statement. These f

Oracle Optimizer: Migrating to using the cost-based optimizer-----series 1.2

oracle| optimization Oracle Optimizer: Migrating to using the cost-based optimizer-----series 1.2 3.2 Cost-based optimizer (CBO) Methodologies based on cost optimizer following computational costs. All execution plans are identified with cost, and

Asp. NET download large file implementation method

This article mainly introduced the ASP.net download large file implementation method, more detailed analysis of the implementation of large file download ideas and specific considerations, the need fo

MySQL database plug-in multi-storage engine mechanism

What is a MySQL database? Typically, 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. We usually say that the MySQL database, SQL Server database, etc. is actually a da

Backup and restore SQL mode for DB2 Universal database

Motivation The SQL language provides the concept of a schema that is used to group all types of SQL objects. Schemas in the SQL language can be interpreted as directories in the file system. DB2 UDB for Linux, UNIX, and Windows well support the conc

Check and maintain MySQL database tables

mysql| Data | Database Ideally, MySQL has been running smoothly since the first installation. Sometimes, however, problems can occur for a variety of reasons, ranging from power outages to hardware failures to abnormally shutting down MySQL servers (

Online Analytical Processing for Oracle (OLAP)

The concept of online analytical processing (OLAP) was first proposed by the father of the relational database, E.f.codd, in 1993, and he also presented 12 guidelines on OLAP. OLAP has aroused a great

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