Search:     Advanced search
Browse by category:
C/C++   |   Java   |   Oracle/Database   |   SAP   |   ASP .NET   |   Mainframe-DB2   |   Freshers
Home / Oracle / Database / Q: What is pseudo columns ? Name them?

Q: What is pseudo columns ? Name them?
Print
Email to friend
Add comment
Views: 417
Votes: 5
Comments: 0
A: pseudocolumn behaves like a table column, but is not actually stored in the table. You can select from pseudocolumns, but you cannot insert, update, or delete their values. This section describes these pseudocolumns:
CURRVAL
NEXTVAL
LEVEL
ROWID
ROWNUM .
 
 
Others in this Category
document Q: Which is more faster - IN or EXISTS?
document What is RDBMS?
document What is Identity?
document What is Cursor?
document What is UNIQUE KEY constraint?
document Q: Explain Normal Join
document Q: Please explain Outer Join in SQL
document Q: What are different normalization forms?
document What is Normalization?
document What is a Linked Server?
» More articles


RSS
Powered by KBPublisher (Knowledge base software)