Hi,
I need help to build a solution.
1. we have Staging area from two different sources.
2. we do not have EDW, Data warehouse currently and no plan to build due to budget and resource constraints.
3. Currently we have 4 different DataMart's based on user group for reporting. Source to Staging to DataMarts are Weekly full refresh (please don't ask me questions on this topic, it can't be changed).
4. Now we have completely new business group asking for 17 different reports over 10 years of data. this time we are using Power BI for reporting (Previously SSRS).
5. Because there is no history (CDC) process, thinking of using SSAS tabular In-memory along with snapshots as of Quarterly data.
6. I was told to create a new DataMart again with 10 years data and use this new DataMart as source for SSAS to generate these reports. Most of the reports Q12019 vs Q12018. 2018 vs 2017 comparison.
Question: Anyone can recommend a good master plan in this scenario.
So far I have worked in a environment with proper Data Warehouse, Semantic layer, reporting with history. but this is the first time I need to work on reporting without history. first time to use SSAS.