ORACLE and SQLSERVER BOTH RDMS.oracle supports 11+1/2

E.F.codd rules out of 12 rules.but remaining rdms supports

only 5 rules.compare with sqlserver ,oracle has more secure

and high performance to retrieval the data from database.

but sql server supports only microsoft operating systems.

oracle can support every operating system.

using oracle pl/sql ,we can send block of queries to

oracleserver at a time.but IN sqlserver we can not send

multiple queries at a time to the server.