A newbie question: I am trying to make an API server using express js. But dont know how to implement connecting to multiple dbs simultaneously like mongodb, mysql and neo4j.
Lets say a call to :
localhost/api/mongodb connects to mongodb
localhost/api/neo4j connects to neo4j
localhost/api/mysql connects to mysql
I am able to connect to each db separately like mongodb using mongoose and so on, but is it possible to make separate calls to each db and perform CRUD operations on them based upon POST/GET etc.
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I am using NOdejs and my SQL for my application and it is a Sass product,
i need to connect with multiple db using db name come from routes/request.
I havea working cakephp 3.x app. Now I have to save information coming from web forms to 2 databases. One is the local app database, the other is a database on a remote server. When the internet connection to the remote server is not working, I need to save the query and attempt to run it later, when internet connection is back.
To achieve this I want to get the raw sql query from $this->model->save($entity) calls, save them in a special table in the local database. However, I can't seem to find a way to get the raw sql from cakephp ORM. How can it be done?
I have installed ejabberd on an AWS EC2 instance and am using the smack library to connect to it with my android app. At the moment the ejabberd server is using mnesia as the database, however I want to perform some complex queries on some of the data (mainly the MUC room names), as SQL will predominantly the best solution for this, I was wondering if it was possible to replicate the required data to an external MySQL database that I could then query.
Is this possible or am i better looking at a different approach to this problem?
There is no module built into ejabberd to replicate data in Mnesia to MySQL. However, the usual approach is to use the backend you need for each feature. If you want mod_muc to store data into MySQL instead of Mnesia, you can just change the backend to odbc (which means it will store data for that module in a relational database).
You can refer to ejabberd documentation for MUC module: http://docs.ejabberd.im/admin/guide/configuration/#modmuc
Once your MySQL is configured and schema is loaded, you can set db_type to odbc on a case by case basis to choose MySQL for that module.
now I'm working on hybrid mobile application with SQLite. This application just only retrieve the data from database. The data come from MYSQL database, but I want to store the data into local storage which is SQLite so when the user don't have the internet, they can retrieve the data from local storage. So,is there a way to connect mysql db and sqlite? I have been following the tutorial from this site
but I do not know how to connect sqlite with mysql db. So,anyone can help me to solve my problem ?
You can connect using a API that give a response as a JSON and store and access those using ionic local storage
Or you can design a server side code using node js and connect to db
I've set up a Rails app using MySQL, with the database 'DatabaseA'. My Rails app is a port of a PHP app that I've written earlier, so there's some data in the PHP app's database (DatabaseB) that I'd like to port over. It's not as simple as an export/import. I've made some schema changes to the database which would require me to manipulate the data first.
What would be the best way to do this? My ideal solution (in the past for PHP) would be to write another controller, and then quickly access DatabaseB and port the data to the new database.