Auditing Table

[Ram Ve]

Hi,
I have the following clarification

I have an Employee Table

Employee

Name
Age
Gender
Last_Updated_User
Last_Updated_Time

are the columns in the Employee Table

I also have a generic audit table that I can use with the same format for my application

The Structure of the audit table would be



Column_Name
Old_Value
New_Value
Last_Updated_User
Last_Updated_Time


Expected Behaviour:

Insertion:

1. Whenever a new row has been inserted inside the master table, each column must be inserted as a row in the audit table with the old_value as null and new_value as insertion value


Updation:
1. Whenever a row has been updated inside the master table, each column that is updated only must be inserted as a row in the audit table with the old_value as old value and new_value as updated value

Deletion:

1. Whenever a row has been deleted from the master table, each column that is from the master table be inserted as a row in the audit table with the old_value as last value and new_value as null

How do I achieve this?

Please provide me with a Sample. Am new to Triggers and PL/SQL.

Thanks in Advance

[Christophe Verré]

Hi, welcome to the ranch You'll find plenty of examples on the net about using triggers. Try to google it first.