migration

问题 How can I make the financial_year field as unique using Codeigniter Dbforge migration? function up() { $this->dbforge->add_field(array( 'id' => array( 'type' => 'INT', 'constraint' => 11, 'unsigned' => TRUE, 'auto_increment' => TRUE ), 'financial_year' => array( 'type' => 'VARCHAR', 'constraint' => 20 ), 'start_date' => array( 'type' => 'DATE' ), 'end_date' => array( 'type' => 'DATE' ), 'status' => array( 'type' => "ENUM", 'constraint' => "'Active','Inactive'", 'default' => "Active" ),

问题 Can you please give some tips or guidelines, best practices for MicroSoft SQL server to Oracle Data Migration? IMHO, it is something that comes best with experience. So I would like to benefit from your experience. Please share any insights that you have into design, modeling, testing or tuning for a data migration project. I would really appreciate if you share your experience even if it is not between these two RDBMSs. 回答1: Oracle offers a free IDE, SQL Developer, which includes a Migration

问题 At the moment I am investigating how to introduce a DVCS (in particular I am looking at Hg and Git) while retaining the CVS repository in parallel (or even just the access mechanism via the CVS protocol). There are some developers here that are very reluctant to switch from CVS, but running them in parallel should be fine if they can be synchronized automatically or have a CVS protocol frontend. The CVS repository has been manually edited (on-disk) in the past, but all seems to be consistent

问题 It's possible to replace db/migrate/* with the contents of db/schema.rb, so that you only have one migration step. Do any of you ever do this? Why? 回答1: Why would you want to do this? You could just run rake db:schema:load if you don't want to run all migrations. Migrations are used not (only) to initialize a new database, but to migrate it to another version. 回答2: Also, some big Ruby on Rails kit packages (like that one that's slipping my mind now that lets you set up an ecommerce site in

问题 It's possible to replace db/migrate/* with the contents of db/schema.rb, so that you only have one migration step. Do any of you ever do this? Why? 回答1: Why would you want to do this? You could just run rake db:schema:load if you don't want to run all migrations. Migrations are used not (only) to initialize a new database, but to migrate it to another version. 回答2: Also, some big Ruby on Rails kit packages (like that one that's slipping my mind now that lets you set up an ecommerce site in

问题 I'm working on a project using MVC4 in Visual Studio 2012 and have added a column in the table. Now when I want to debug my project the error says to use the migration to update my database. What I have to do? I have been searching a lot and found some methods like: protected override void OnModelCreating(DbModelBuilder modelBuilder) { Database.SetInitializer<ResTabelaIndex>(null); } but don't know how and where to implement this... Have tried in app_start , global.asax etc... What I found

问题 I have a PostgreSQL database that I want to move to SQL Server -- both schema and data. I am poor so I don't want to pay any money. I am also lazy, so I don't want to do very much work. Currently I'm doing this table by table, and there are about 100 tables to do. This is extremely tedious. Is there some sort of trick that does what I want? 回答1: You should be able to find some useful information in the accepted answer in this Serverfault page: https://serverfault.com/questions/65407/best-tool

问题 I have a PostgreSQL database that I want to move to SQL Server -- both schema and data. I am poor so I don't want to pay any money. I am also lazy, so I don't want to do very much work. Currently I'm doing this table by table, and there are about 100 tables to do. This is extremely tedious. Is there some sort of trick that does what I want? 回答1: You should be able to find some useful information in the accepted answer in this Serverfault page: https://serverfault.com/questions/65407/best-tool

问题 I have a SQL server database (Tables, Views, SP...). I need to convert this database to Oracle 10g. How can I do it? 回答1: Transferring the data will be easy; SQL Server integration services can do that, or Oracle's SQL Developer. However, views and stored procedures are different between Oracle and SQL Server. SQL Server uses T-SQL, Oracle uses PL/SQL. These are not very compatible and I don't know a tool can automatically convert between the two. If your database relies on specific T-SQL

问题 I am currently upgrading my Hibernate version to the latest version 5.2.10. I replaced my code in the HibernateUtil for the SessionFactory creation. 4.3.11.Final (Previous) : public class HibernateUtil { private HibernateUtil() {} private static SessionFactory sessionFactory; private static Configuration configuration; public static Configuration getConfiguration() { return configuration; } private static SessionFactory buildSessionFactory() { try { if(sessionFactory == null) { configuration