Avaya CMS uses IBM's Informix database and this post helps you to understand better how to connect to the Informix database using .Net and C# as a language.
Below are two of my posts on stack overflow,
- The first post will help you to understand the connection string fields and format of that that are required to connect to the database. There is a beautiful answer by "Spokey Wheeler" to this post.
- The second post will help you to get the block of working C# code to connect to IBM's Informix database.