Q1. What is dimensional modelling in a Data Warehouse (i.e. DWH)?
A1. A dimensional model is a data structure technique optimised for Data Warehousing tools (i.e. OLAP products). The concept of Dimensional Modelling is comprised of Fact and Dimension tables.
A “Fact” is a numeric value (i.e. aka a measure) that a business wishes to count or sum.…
This extends Q1 to Q5 at 13 Data Warehouse interview Q&As – Fact Vs Dimension, CDC, SCD, etc – part 1. Q6. What is a Factless Fact table? A6. From…
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Q1. What is data backfilling? A1. Backfilling data is a process of reactively processing any missing data for a past time window. Q2. Why do you need to backfill data?…
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Q1. What is an ETL process? A1. ETL is a architectural style, and it stands for Extract, Transform and Load. Extract does the process of reading data from an input…
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Large mission critical applications use Straight Through Processing, and these systems need to be highly scalable. So, when you apply for these high paying jobs, it really pays to prepare for your job interviews with the following questions and answers.
Q. What is Straight Through Processing (STP)?
A. This is the definition from INVESTOPEDIA.…