Whether you are a candidate actively looking for interview questions to become anETL developeror a recruiter looking for ETL developers, this blog will help you to enhance your understanding of ETL processes. Table of contents Basic ETL interview questions and answers (35)Intermediate ETL interview ...
Checkout –ETL Testing Interview Questions & Answers
But, even then, there's still a missing piece—what we call "the last mile"—between the warehouse and the tools the business workers use. The solution to this "last mile" problem—taking you from your current data situation to your dream data scenario—is a little something calledReverse ...
Scenario 1: Get data for each trade and settlement for the current instrument, using the following query: SELECT T.INSTRUMENTKEY, T.TradeDate as Sec_Date From DIM_INSTRUMENT I, FACT_TRADE T WHERE T.InstrumentKey=I.InstrumentKey and I.Status=’C’ UNION ALL SELECT S.INSTRUMENTKEY, S.Settl...
An example of this scenario is if your data warehouse, which expects to receive integer datatypes, starts receiving string values. Processing Order: Data pipelines are distributed systems to handle massive scale with high availability. This may lead to the arriving data points taking different paths...
BiG EVAL checks data against your very own and scenario-specific quality criteria. User-defined test cases give great flexibility when you need your own testing algorithms. =>Visit BiG EVAL Website #5) Informatica Data Validation Informatica Data Validation is a GUI based ETL Testing tool which ...
Below are the sample test cases for the scenario explained above. You can use these test cases as a template in your Informatica testing project and add/remove similar test cases depending upon the functionality of your workflow. #1) Test Case ID:T001 ...
It’s a very common scenario.But those in-house solutions can quickly become harder and harder to manage and extend to support increasingly complicated requirements. At some point you face the decision: do you keep improving an in-house solution or do you reassess your needs and look around ...
Step 1. The first step is to create a scenario for input data and the expected results. Now we will validate ETL testing with the business customer. ETL testing is the best approach to gather the requirements during designs and can be used as a part of testing. Step 2. The second step...
Next, we will cover the second scenario – building custom BI using specialized tools. Let’s start with data integration. ETL tools and libraries/packages To make decisions that will positively influence business in both short and long runs, companies must have a full view of their operational...