the cost is too high, and even if the system is redesigned and developed, the legacy system will still be the same. Alternatively, the legacy system can be refactored to improve the system design without modifying the system function. Only this refactoring is often the prelude to a major expansion or modification of the system, and it is not recommended to repay the "technical debt (technical debt)" approach if it is not absolutely necessary. Refactoring should be done at the same time as devel
Tags: PCL alt requires CMD function refueling Programmer command ImagesLaravel claims to be the best frame in the world, the database migration is counted as a, here is the first simple door: Laravel is very powerful, it writes the operations in the table as a migrations migration file,You can then manipulate the table directly by migrating the files.So, the data migrat
The SQL Server Migration Assistant (SSMA) team announced today the launch of the migration Assistant for MySQL, Microsoft SQL Server Migration Assistant 2008 for MySQL.
Read related information: Microsoft releases SQL Server Migration Assistant for MySQL
Download Ssma for Mysql:sql Server
methods, steps and experiences on data migrationIn the project will often encounter the system after the complete replacement of the historical data migration issues, to show respect for the customer's historical work, not to mention a lot of data are still necessary to retain.How do you do the historical data migration?System Analysis:1, analysis of the original business systemAccurate to the approximate s
Introduction to the real-time migration of Xen virtual machines
Xen provides us with a powerful feature, which is the dynamic migration method. It allows domain to migrate domain to another Xen server at the expense of minimal service disruption during runtime.the main benefits of using Xen dynamic migrations are listed below:
1.Xen dynamic migration, along wit
Tags: initial setting Up Database Migration Auto Migrate ASE nbsp file modelsI. Setting up Code First Data migration for model changes 1, tools---Library Package Manager, Package Manager console, input "Enable-migrations" or Enable-migrations-contexttypename Mvc.Models.DataContext Enable-migrations-contexttypename namespace. Context Name Note: If correct, the Code first
Use the Entity Framework (EF) code in quick custom NopCommerce for priority migration, nopperformanceef
I have seen many users in the nopCommerce forum asking them how to use Entity Framework (EF) code to migrate the code first to customize nopCommerce and add new fields and entites cores. In fact, I used a lot of EF Migrations in the nopCommerce custom project. I must say it is very helpful in development.
Today, I will share with you how to do this
After you build the database by using code firstWhen you run a program when a database changes, a problem with data changes can be removed by removing the database rebuild resolutionBut the previous data cannot be retained in order to preserve the previous database data we need to use the Code First Data migrationFirst, if you need to change the data structure, you must first change the model class and then use the Code Firs Data Migration If you chan
Detailed steps for cross-platform migration of application systems based on DB2 and PHP (1 ). This article describes how to port the DB2-based PHP application system from the AIX platform to the Linux platform. This article includes the underlying DB2 database transplantation and the upper-layer PHP application system.
This article describes how to port the DB2-based PHP application system from the AIX platform to the Linux platform. This article cont
Continue sharing Discuz today! X3.0 full-site migration and upgrade methods! DZX has been used since the end of 10, and there have been two or three server replacements. here we will share with you Discuz! X3.0 full-site migration and upgrade tutorials to facilitate migration and migration in the same forum. I. prepara
Label: Style Color Io OS ar use SP file data
Before January 1.6, Django only supported adding new models to the database, but could not edit or modify existing models. At that time, the missing functions of Django could be implemented through south.
According to the official documentation, PostgreSQL databases are the best supported, followed by MySQL. Currently, SQLite cannot implement the complete migration function.1. New commands
Django 1.7 bring
SQL Server data is currently present on the corporate server and needs to be migrated to SQL AzureThere are two types of migration
Database structure replication
Database structure replication and data migration to SQL Azure
The 1th approach is to create a new library from an existing database to a new server by generating a structure script on the original server and executing it on the n
Background:My company's official website uses PHP for re-development, abandoned the original. NET development environment, but need to use some of the old official website data, so need to do data migration.The environment is as follows:Old official website: Windows server R2, SQL Server R2The Web: RedHat 6.5,mysql,php ...==================== I'm a split line =========================There are a lot of software on the network claiming to be able to do SQL server-> my SQL data
(This article also published in my public number "dotnet daily Essence article", Welcome to the right QR code to pay attention to. )Preface: Although EF7 has redesigned the entity Framework, it is still able to support data migration.The Entity Framework 7 is a rebirth of the Microsoft ORM Framework, becoming more lightweight. As a result, the data Migration (migration) feature is not turned on by default,
MySQL using the RDS management ConsoleData migration to Rds-mysql using the RDS management ConsoleThis method is a kind of MySQL online migration method, can not stop service to complete the migration of the database, support MySQL 5.1 5.5, 5.6 (5.0 version only support full-scale migration)
columns is a one-time DDL operation that generates a large number of Redo Log records;
Data Tables are locked for a long time, which hinders the production system. When a data column is added, an exclusive lock is added to the data table, which hinders other DML operations;
Destroys the original storage structure, resulting in a large amount of Row Migration data. When you try to add each data row to the default value for expansion, the rowid feature
is very convenient, the original physical server application does not need to pause for too long time to continue to work on the virtual platform.But the virtualization P2V is not ghost, the process of migration is more like the OS operating system from the hardware drive stripped and overhead to the virtual layer, the virtual layer will take over the hardware driver, and the hardware resources, such as: storage disk, processor, Key components such a
;———————————————————————————————————————————————————————————————————————————————————————————————————Body partRemember I in the "Follow your heart-talk about Vmcloud" in the article, at the end of last year, Vmcloud blog bandwidth once exceeded 6G (resulting in the October, November end of the month has two or three days is inaccessible state, show bandwidth excess), and the original blog host access to the bandwidth limit is 6G (after all, is a personal blog, so no investment too much, the purch
Migration is a Database Synchronization tool in a distributed environment. It appears in the Ruby on rail framework. migratordotnet is A. NET database version system similar to migrations of Ruby on rail. Supported databases include MySQL (5.0, 5.1), PostgreSQL, SQLite, SQL Server (2000,200 5), and Oracle (not well tested). You can use nanttask, msbuildtarget, console Application can be used in three ways.
The migrations class is a subclass of
1 Introduction
In recent years, many colleges and universities in China have gradually established network infrastructure and built some application systems. However, due to lack of understanding of the overall structure of the Digital Campus, there is a lack of unified planning for system building. The existing systems are separated from each other, and information and resources cannot be shared, however, some systems are highly integrated, difficult to maintain and upgrade, and the network ba
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