by Narendar Yalamanchilli | Jul 30, 2017 | ETL Testing
Type 2 Slowly Changing Dimensions are used in the Data Warehouses for tracking changes to the data by preserving historical values. This is achieved by creating a new record in the dimension whenever a value in the set of key columns is modified and maintaining start... by Narendar Yalamanchilli | Jan 11, 2017 | ETL Testing
Over the last few years, we have been working with a number of customers across various industries such as Life Sciences, Financial Services, Higher Education etc. While the problems related to data testing are similar across industries and JSON and flat files are... by Narendar Yalamanchilli | Dec 9, 2016 | ETL Testing
Over the last few years, the Salesforce platform has become an incredible force in the market for various reasons. Of course, the most obvious use case is for the CRM capabilities. In addition, many organizations have started using the power of the force platform to... by Narendar Yalamanchilli | May 4, 2016 | ETL Testing
Oracle E-Business Suite (EBS) R12 is a significant new version with valuable new features and capabilities. Although there is an upgrade path from EBS 11i to R12, most companies reimplement R12 and migrate the data from their 11i instance. Reimplementation can be a... by Narendar Yalamanchilli | Jan 27, 2016 | ETL Testing
Recently, I stumbled upon a relatively old article on Data Migration from TDWI that explains what it is, how it is different from other integration patterns, popular techniques and the typical challenges associated with this pattern. Though the article is more than 5... by Narendar Yalamanchilli | May 2, 2015 | ETL Testing
Most of the use cases that we encounter are for DW scenarios. However, recently, we are also seeing many scenarios for testing transactional systems. This blog is to highlight on one such example. The customer offers a survey related product and the... 