Stories of Big Daddies of the industry

Larry Ellison (Oracle) - Never gradated from college, learning was primarily based on Self study. He just picked up a book and started programming.

Bill Gates (Microsoft) - Never completed college

Steven Jobs (Apple) - Epic Misfit!!

The reason I need to write the same in my blog, that every s/w engineer needs to remind himself that he is working in an industry where degrees and certifications do not matter.What matters is your intellect, competence and aptitude. It gives a fair platform to a private engineering college or a correspondence student to compete against the ones coming from the elites institutions.So if you are good enough you are bound to make it big.The question is -Do you have it in you?

Difference between Delta Load and Incremental Load

Scenario:

We have completed the first load into the target table, and wish to implement the Delta load and the Incremental load.

• Delta Data is the parent of Incremental Data.
• What is Delta Data?
• Assuming that in our scenario, the first load happened on 1-Jan-2015. The data present in the source on 2-Jan -2015 is the delta data. 
• How to read delta data?
• Add the date filter in the source query i.e. WHERE load_date>1-Jan-2015
• What is incremental data?
• The data that we have read , as delta data, needs to be compared with the target data for key columns. This is generally done through SCD(Slowly Changing Dimensions) algorithms. Incremental data is the changed or new data found while the delta and target data are compared via SCD algorithms.