My aim is to create triggers to few tables upon updation or deletion of entries from these tables.
The trigger should enter the name and columns of the corresponding updated/deleted table to another user table.
Instead of writing individual triggers for each table is it possible to write a single trigger ?

>Solution :

Instead of writing individual triggers for each table is it possible to write a single trigger?

[TL;DR] No

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The CREATE TRIGGER syntax is:

Syntax

create_trigger ::=

plsql_trigger_source ::=

simple_dml_trigger ::=

dml_event_clause ::=

As you can see from the syntax diagram, a CREATE TRIGGER for simple DML will be in the format:

CREATE TRIGGER trigger_name
  AFTER UPDATE OR DELETE ON table_name

The syntax requires a single table/view identifier to be specified for each trigger.