multiple-databases

问题 On Grails 2.0.3, I installed Spring Security Core and created the User, UserRole and Role objects as per the tutorial: http://blog.springsource.org/2010/08/11/simplified-spring-security-with-grails/ All went fine until I decided to add a second datasource in preparation for accessing objects from a different database. DataSource.groovy looks like this: test { dataSource_product { dbCreate = "update" url = "jdbc:mysql://localhost/products" pooled = true driverClassName = "com.mysql.jdbc.Driver

问题 In my web application, I have 2 totally different databases - one that's being used mostly by a CMS from which we'd like to get page information on non CMS pages on the same website, & one that contains totally different data. Is it possible to use Spring.NET's Open Session In View module with multiple session factories for both of those databases, so in this case I have 2 objects defined in spring.config of type Spring.Data.NHibernate.LocalSessionFactoryObject ? 回答1: I think you are talking

问题 I have different databases. I have tables within each database. I would like to know if I can ask how many databases excluding some such as 'schema' 'mysql' I have once know how to perform a subquery asked by a particular table of all the databases resulting from the first question. example. the structure would be db1 -> user-> id,name,imei,telephone,etc.. db2 -> user-> id,nameuser,imei,telephone,etc.. db3 -> user-> id,nameuser,imei,telephone,etc.. .... db1000 -> user-> id,nameuser,imei

问题 I have an Access database containing information about people (employee profiles and related information). The front end has a single console-like interface that modifies one type of data at a time (such as academic degrees from one form, contact information from another). It is currently linked to multiple back ends (one for each type of data, and one for the basic profile information). All files are located on a network share and many of the back ends are encrypted. The reason I have done

问题 I am trying to use 2 persistence units within the same transaction in a Java EE 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/BeachWaterLIMS</jta-data-source> ... These persistence units correspond to JDBC resources and connection pools which I had defined in Glassfish as follows (include one

问题 This post describes how to update two databases from maven using liquibase: liquibase using maven with two databases However, when I try the exact same configuration in my pom.xml (included below) it does not work. I get this error when running 'mvn liquibase:update': The driver has not been specified either as a parameter or in a properties file. Running with verbose set to true I get: [INFO] Settings---------------------------- [INFO] driver: null [INFO] url: null [INFO] username: null

问题 I have master - slave replication setup for MySQL db backend for Django. Currently I am reading and writing for Master DB only, but my dashboards are quite query intensive. I was searching for an option, where in I can Define like following DATABASES DATABASES = { 'default_slave': { 'ENGINE': 'django.db.backends.mysql', 'NAME': 'application', 'USER': 'root', 'PASSWORD': '', 'HOST': '', 'PORT': '3306', }, 'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME': 'application', 'USER': 'root',

问题 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 < ActiveRecord::Base has_many :persons def to_s; companyname; end I have put the select field on the create new Kase view, and the create new Person view as follows: <li>Company<span><

问题 I'm pretty new to using PDO and I would like to set it up so I can have multiple databases as and when I need them. So I've created a function that allows you to pass a database name to be used as and when. It does work to a certain extent, as in it selects the database you pass in but even if the database is omitted or incorrect it still allows you to select tables and rows from a database which seems to be selected at random based on the MySQL user. This isn't a major issue I suppose but I

问题 I am looking forward to connect two different database from different servers. Also, i would want to run a query that fetches data from both the database into a single result. Am doing this in PHP script with mysql. here is how am looking forward to do it [ without success :) ] $dbh1 = mysql_connect('server1', 'uname', 'pwd')or die("Unable to connect to MySQL1"); $dbh2 = mysql_connect('server2', 'uname', 'pwd') or die("Unable to connect to MySQL2"); mysql_select_db('db1', $dbh1); mysql_select