Qlik Community

QlikView Scripting

Discussion Board for collaboration on QlikView Scripting.

Announcements

Breathe easy -- you now have more time to plan your next steps with Qlik!
QlikView 11.2 Extended Support is now valid through December 31, 2020. Click here for more information.

Not applicable

Maintaining 3 (or 4) Tiered QVD QlikView Architechture

Setup/Intro:  I have created a fairly complex QlikView application which utilizes 3 Tiered Architecture (or 4 Tiered, based on how you look at it) due to the required reload times and amount of rows.

At a high level I have the following Tiers/layers

Tier1: Load raw DB data and store into QVDs

Layer 1: Load data from Raw database tables and store in separate QVDs

Tier2: Staging/Transformation

Layer 2:  Apply first level of staging/transformations

Layer 3:  Apply second level of staging/transformations

Tier3/4: Data model and UI

Layer 4:  Create data model (star schema) using data from previous layers

Layer 5:  Binary load data model (Layer 4) into UI

Question:

I am finding it difficult to maintain this type of architecture when say, for example, I change or add a field in layer 2.  If this happens I have to change layers 3, 4 and 5.  Furthermore, I am now working on creating additional applications utilizing data from either layer 2 or 3 as a starting point, so there will be even more scripts which will need to be updated when a change occurs.  What are some ways to make maintenance easier?  One of the main type of examples of changes would be adding or renaming fields.