legacy-database

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Legacy File Schema - Reverse Engineering

I\'m currently in the process of converting over 20k database tables from Corel Paradox 4.0 format (DOS Based, with a .db extension) to SQL databases, and rather than using off the shelf software, I\'[详细]

2023-04-04 03:34 分类：问答
Problem mapping Grails Domain class to legacy database with TEXT field

I am trying to build a set of domain classes for a legacy database using Grails 1.3.7 and MySQL 5.1.56. I am specifying the MySQL connector in the BuildConfig.groovy file as \'mysql:mysql-connector-ja[详细]

2023-03-18 17:37 分类：问答
NHibernate on a table with two "primary" keys

I\'m learning NHibernate in order to layer it over a rather peculiar legacy database.Other applications use the same live database, so I can\'t make changes that will affect them.[详细]

2023-03-16 11:55 分类：问答
Rails 3: DataObjects::SQLError -- How do I stop these from producing errors on *warnings*?

When I insert just a few fields to a table in a legacy database schema (via DataMapper), I\'m getting the following:[详细]

2023-03-03 12:06 分类：问答
Django Zero Value on ForeignKey Field

I\'m working on very badly designed legacy databas开发者_开发问答e. On some of the tables not only can the foreign keys be null (which is OK) they can be 0 too.[详细]

2023-02-27 04:34 分类：问答
Entity Framework 4.0 Many-Many relationship Using Non-Primary Key

I am trying to build a generic repository using Entity Framework 4.0 using a legacy MS SQL database I have inherited. A pretty familiar scenario.[详细]

2023-02-22 14:50 分类：问答
Translating data mining sql-queries into Grails equivalents?

I would like to build a web interface to present logdata. This should be a nice opportunity to try to build a little web app using Grails, which I have been wanting to try out for quite a while, but 开[详细]

2023-02-22 05:47 分类：问答
How can I use TPT inheritance models when primary keys have different names?

Using Entity Framework 4.1 against a legacy database, I\'m unable to generate a working set of TPT inheritance models that aren\'t pluralized and use different names for a common primary key.[详细]

2023-02-20 16:10 分类：问答
Migrating several legacy databases into one Rails app

I have several (old) Drupal-sites that need to be replaced with one single new Rails app. That new site should hold all old Drupal-content. That old Drupal-content is partly broken (due to nearly 7 ye[详细]

2023-02-16 07:52 分类：问答
Dealing with legacy database views in rails

I am new to ruby and rails and I am having difficulty conceptualizing the MVC techniques in conjunction with database views.I am dealing with a legacy database that has several viiews that are used to[详细]

2023-02-14 13:08 分类：问答