A transaction in SQL (structured query language) is a larger unit of database processing that contains one or more database access operations like insertion ,deletion, retrieval and modification operations. These transaction are required to fulfil certain characteristics and they are : Atomicity: The transaction is either performed entirely or not performed at all. Isolation: The … Read more

The real purpose of business is to attract and retain a customer in a cost-effective manner. A business successfully managing to do both will be the one able to survive in this competitive market. The major cause of any business failure is its lack of sales which is due to it's inability to attract and … Read more

Scandium is very reactive. It is low in the periodic table and down the group the reactivity of the metals increases.