seperate read and write databases with hibernate
With hibernate, I want to be able to support multiple databases, one for read and one for writes. Is this possible? Is the only way to create 2 separate session objects? ...
multiple-databases
MySQL: Querying multiple databases at once
I have WordPress instances with each in its own database. For an update I need to query all active plugins, that are stored in a table 'wp_options' and accessible via WHERE option_name='active_plugins' How can I access all active plugin settings (spread over multiple databases) and output them in one single SQL result? I know the data...
How I can use partitioned database with RoR?
Hi, I want to ask this question with a specific example as I am looking for a concrete answer. :) Let's say I have a set of MySQL databases sharded on user_id. For example, all users who have ids 1-10000 will go into database D1, user ids with 10001 - 20000 will go into database D2 so on.. I have a model "User" in my RoR application. ...
Problem in creating new objects while using sqlalchemy with database sharding.
Hi, I am using sqlalchemy(version-0.4.5) with turbogears(version - 1.0) as its orm layer, with sharded multiple databases instances at the backend. While sqlalchemy seems to support passing session/engine bound to a database as a parameter to : Quering Tables : session.query(...) function Executing native sql queries : engine.execut...
Making a connection between multiple databases
I'm using JAVA DB (derby) I want to import a public view of my data to another database (also in java db). I want to pass this data and save in to the other database. I'm having trouble since the general rule is one connection to one database. Help would be much appreciated. ...
Subsonic 3.0 LINQ Templates with Multiple Databases
I'm evaluating SubSonic 3.0 for use in our business as a replacement for our POCO objects. I'm new to SubSonic, literally installing it yesterday. I've gotten to the point where I can connect to one database using the 3.0 LINQ T4 Templates, and have been wooed by the promise of being able to connect to multiple databases in one applica...
Help with nongoogle Contact management...
I have been searching for an ACT! compatible contact management solution and have not had any luck. While I am not a programmer or developer, I have been trying to find anything I can on the subject. (very overwhelming!!!) So, that's why I decided to chance asking for help. I have a Moment and all the contact managers tend to sync with...
WCF with MANY database connections
I'm working in the development of an ERP type .Net WinForms application consuming a WCF service. It's to be used by many small companies (in the range of 100-200). Database is SQL Server 2008 and the service will be hosted as a Windows service. Even thought there will be a single DB Server, our customer insists in having separate datab...
Best way to generate report using multiple databases
Hi All, I am new to the reporting world. Wanted to know which is the right solution to about for generating a single report by querying for data from multiple databases. We are planning to use some reporting solution like Jasper Reports or BIRT. Generally the databases are going to be postgresql. Please do feel free to let me know abou...
EJB3 - using 2 persistence units within a transaction (Exception: Local transaction already has 1 non-XA Resource)
I am trying to use 2 persistence units within the same transaction in a JEE application deployed on Glassfish. The 2 persistence units are defined in persistence.xml, as follows: <persistence-unit name="BeachWater"> <jta-data-source>jdbc/BeachWater</jta-data-source> ... <persistence-unit name="LIMS"> <jta-data-source>jdbc/BeachWaterLIM...
How does load balancing work with multiple server with multiple DBs
I guess what im looking for is a description on how this all works together. I'm used to setting up one server with maybe another server to handel the DB. My question is how does the load balancer work where do all the script(php,python) files go? If i make a change to one i have to rsync them to all the server that the balancer refers...
How to use multiple database in a PHP web application?
I am making a PHP web Application in which i am using MySQL as database server, i want to make backup of some tables from one database to another database(with that tables in it). i have created two different connection, but the table is not updated. $dbcon1 = mysql_connect(DB_SERVER,DB_USER,DB_PASSWORD) or die(mysql_error()); $dbase1 =...
How to identify a particular entity's Session Factory with Fluent NHibernate and Multiple Databases
Question follows on from http://stackoverflow.com/questions/2655861/fluent-nhibernate-multiple-databases (no need to follow this link,there should be enough background here). My problem is this: I'm using Fluent NHibernate. My application uses multiple databases. Each database has its own entities registered (mapped) against it. The re...
Rails database relationships
Hi Everyone, I have three models that I want to interact with each other. Kase, Person and and Company. I have (I think) setup the relationships correctly: class Kase < ActiveRecord::Base #HAS ONE COMPANY has_one :company #HAS MANY PERSONS has_many :persons class Person < ActiveRecord::Base belongs_to :company class Company < Act...
Using Multiple databases with a common code
Hello, I just want to be able to store and access data from ACCESS,SQLSERVER,SQLCE,SQLLITE based on the users choice. Is there a SINGLE library that can help me do this job in c#? I would like to simply change the connection string and not the code. Is there any way for this? Thanks. ...
Looking for a good implementation that will access multiple databases simultaneously
I just want to find out if there's a good implementation (in C#/ASP.NET) on how to access my records from my different databases simultaneously. I have this simple application which suppose to search on these databases, then, display the record if a certain keyword is matched. I have like 5 databases (currently using MySQL) all in all a...
Single website multiple connection strings using asp mvc 2 and nhibernate
Hi In my website i use ASP MVC 2 + Fluent NHibernate as orm, StructureMap for IoC container. There are several databases with identical metadata(and so entities and mappings are the same). On LogOn page user fiils in login, password, rememberme and chooses his server from dropdownlist (in fact he chooses database). Web.config contains...
Using entity framework to connect to multiple similar tables in .net MVC.
A relative newcomer to .net MVC2 and the entity framework, I am working on a project which requires a single web application, (C# .net 4), to connect to multiple different databases depending on the route of access, (ie subdomain). No problem with this in principle and all the logic is written to transform the subdomain into an entity c...
Qt MOH multiple inheritance problem ?
Greetings , I my QT application,I have a base class as follows.I am using QObject because I want to use Signal-Slot mechanism in all derived classes. class IRzPlugin : public QObject { public: virtual void registerMenu(QWidget*); virtual void execute(); } Then I have another class as follows.I need to extend from QWidget because...
.NET migrations: Setup and migrate multiple databases at runtime
Hi guys, Brief introduction: I have this ASP.NET Webforms site with the particularity that it doesn't have only 1 database, it has many. Why? Because you can create new "instances" of the site on-the-fly. Every "instance" share the same codebase, but has its own database. These all databases have the same schema (structure) but of cours...