migration

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Best practices for migrating database content from one very poor structure to one very logical?

TL;DR what\'s the best way to migrate lots of data between one very poorly structured database (with much repetition of columns, no interrelations, and duplicate data), to another highly organised and[详细]

2023-03-26 17:21 分类：问答
how can a rails 3 migration use methods in my ApplicationHelper and WidgetsHelper?

I\'ve created a migration to reformat a few things in the database (adding a friendly link in format \'my-name-city-state\' to my Stores records), but rake db:migrate fails and says[详细]

2023-03-26 15:18 分类：问答
Heroku - PGError: ERROR: syntax error at or near "ENGINE"

I am trying to run heroku rake db:migrate to run my migrations on heroku and the first two migrations ran great but the third which looks like this[详细]

2023-03-26 14:29 分类：问答
Deploying a Jersey webapp on Jboss AS 7

Currently running some webapps on Jboss AS 4/5 and I am testing migration to jboss7. When I try to deploy a jersey based webapp on JBoss AS 7 (full profile with standalone-preview config file), I get:[详细]

2023-03-26 06:39 分类：问答
correct way to migrate a sybase database to new hardware

I have a small Sybase ASE 15 database on a box that is scheduled to be de-commissioned. What is the best way to \"clone\" or \"transfer\" my database to the new box?[详细]

2023-03-26 01:09 分类：问答
SQLServer on existing update

We are planning to convert an application from Sybase SQL Anywhere to SQL Server. At SA we use a lot of \"on existing update\", that checks by primary key, if l开发者_JS百科ine exists.[详细]

2023-03-26 00:40 分类：问答
How can I create or update the database schema from models in rails?

I have to create or update a schema from some models that I have changed in rails. T开发者_开发知识库he original schema file it\'s wrong because of some changes I have done in the models.[详细]

2023-03-25 10:00 分类：问答
How to migrate code from HasKeyValue to UnprefixedAttribute?

Consider this code: i开发者_运维问答mport scala.xml.{Node,HasKeyValue} def domatch(x:Node): Node = {[详细]

2023-03-25 09:19 分类：问答
How to migrate production data with collapsed rails migrations

What would be potential strategies to getting the old data into a new db structure? 开发者_运维百科One strategy we are thinking of is to write some ruby which executes some sql on a per table basis.Si[详细]

2023-03-25 07:49 分类：问答
Migrating application signatures Eclipse between Windows and Linux

I\'开发者_如何学JAVAve moved my workspace and successfully managed to get it to work on Linux (Ubuntu 11.04) my problem lays on the fact that I can\'t remember how I did this when I did it for my mac.[详细]

2023-03-25 03:32 分类：问答