====== How to create a connection to a database ======

In order to use hEIDI, a connection to a MSI db (Mass Spectrometer Identification database) is required. But it is possible to create a connection for all kind of databases and to execute queries on it.

In the ''Service'' window, 
  * Expand the ''Drivers'' node 
  * Select the database server type hosting your MSIdb: ''PostgreSQL''
  * Right-click and select ''Connect using...'' in the context sensitive menu in order to enter the connection properties.

**Connection to a Postgres server**

**Note** : 
  * :!: **Information that appear in the screen shot below are dummy, ask your system admin for your serverhost/database/user/password in order to connect to your database** :!:
  * MSIdb are most often created on postgreSQL databases server and in the ''Advanced'' tab, choose ''public'' as schema


{{:connect.png|}}