1.1 What Is LANSA Open?

LANSA Open is 'middleware' software that facilitates the high speed transfer of information and data between

• PC-based client applications, developed using any of the popular workstation development tools

and

• a server (LANSA), either on an IBM i, Windows or Linux platform.

An integral part of LANSA Open is the LANSA Repository, which contains all field and file details including the relevant business rules. This ensures that all PC applications are subjected to the same rigorous security checks, data validation and referential integrity checks as IBM i applications.

Note that if you are programming using any language that targets the .NET runtime (e.g. C#, VB.NET), you should use LANSA Open for .NET instead of LANSA Open.
The use of LANSA Open from .NET languages is NOT recommended due to incompatibility with .NET strings – manual conversion is required when passing .NET strings.