Oracle DBA

LIST OF RELATIONAL DATABASE MANAGEMENT SYSTEM WITH EXAMPLES

November 6, 2015November 6, 2015 Sakthivel Madesh0 Comments

Here is top 10 examples of (RDMS) Relational database management systems. Oracle MySQL Microsoft SQL server PostgreSQL DB2 Microsoft access Sq Lite Sybase Tera data Fire bird (329)

Oracle DBA

Oracle Interview Questions and Answers

September 24, 2015September 24, 2015 Sakthivel Madesh0 Comments

1. Difference between varchar and varchar2 data types? Varchar can store upto 2000 bytes and varchar2 can store upto 4000 bytes. Varchar will occupy space for NULL values and Varchar2 will not occupy any space. Both are differed with respect…