Illustrate out the concept of Foreign Key. How a foreign key distinct from the Primary Key? Can the Foreign Key accept nulls?
With an essential ex illustrate out (i) Basic Constructs of E-R Modeling (ii) E-R Notations.
Illustrate the first three Normal Forms taking the use of an un-normalized relation and reducing it to 3 NF.
Illustrate out the concept of the Data Mining? How it is related with the data warehouse.
prepare down the SQL queries by using Data Manipulation Language (DML) statements.
Make the payroll database considering table employee.