COUNT is a group function returns result by summarizing multiple rows. All group by value function will have the usage of DISTINCT or ALL option and so is the COUNT which uses the DISTINCT option. DI...

Stored procedures are compiled collection of programs or SQL statements that live in the database. A stored procedure can access and modify data present in many tables. Also a stored procedure is not...

The main important aspect is physical data model is created after logical data model. For designing a logical data model one need not have through knowledge in any specific RDBMS like oracle, Informi...

Oracle Net Services provides enterprise-wide connectivity solutions in distributed, heterogeneous computing environments. Oracle Net Services eases the complexities of network configuration and manag...