Database normalization is used to .

Which of the following relations is also called a snapshot relation?

Which of the following indexes in databases is usually dense?

What is the order of execution of operations during a pessimistic concurrency control technique?

Concurrency control is used .

A database system without concurrency control may cause:

Which of the following correlated SQL queries will return Employeeld. EmployeeName, Salary and Department of all the employees whose salary is more than the average salary of employees in their respective departments?

In which areas data-mining technology can be applied? 1. Marketing 2. Finance 3. Manufacturing 4. Healthcare

Which of the following relational algebra expressions represents the query that will f‌ind names of customers having an account balance of over Rs. 5.000?

Consider a table named 'Account,' having the following fields.

Which of the given options is targeted and focused on a single subset of an organization?