What data structure is behind the SQL indexes?

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The B-Tree structure provides the SQL Server Engine with a fast way to move through the table rows based on index key, that decides to navigate let or right, to retrieve the requested values directly, without scanning all the underlying table rows.
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I need your help to choose my career as I have three years of gap between my education. I know SQL. Can anyone tell me should I choose MS SQL server or oracle because I am interested in the database? Which one will be better to learn to get into the IT industry? Please help me! Thank you!
As you are strong and interested in SQL, why not to choose ETL Testing? It has a good career ahead in data projects. To survive in the market, you need both Oracle & SQL Server. Actually, both are almost same but are different products.
Santhosh
I want to teach, how can I?
You can teach students Online as well as offline. If you want to teach online you need to have a communicating media.
Yasheela

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