A unified standard and the introduction of a single tool is the key to easier and more manageable way to work with a complex IT systems. This was exactly the case in the IT of NLB at the field of data modeling: we have written and implemented unified data modeling methodology and selected CA Erwin DataModeler as a single tool for modeling. This allowed us to build a common data model from which we can see the data interdependencies between systems, the impact of changes in the data model.
More about the challenges in selecting a single tool, writing and setting methodology will be explained at the presentation.