What is the financial aspect for a business as to what database software they will buy?

Answer: Database software is bought on basis of the processing, cost, requirement etc for any particular. According to the financial perspective the database software should have the following characteristics:-

Database software that has most accurate and main feature according to the business requirement is selected for buying and the others with extra features are not considered as more feature cost more amount which is not needed. Database software which is still in progress to be built is pre-booked and money is invested on it because the price of the required software might increase after getting completed. Scalable database software should be bought so that it can extend according to need at low cost.