Calculate disk space needed for INDEX
Hi,
How to calculate disk space needed for creating an INDEX? Please point me to resources where I can get detail.
For Example:
I need to create an non UNIQUE INDEX on the following columns, a rough size would do.
<PRE>
EVENT_DATE NOT NULL DATE
APPT_DATE_SLOT VARCHAR2(15)
EVENT_STATUS VARCHAR2(4)
</PRE>
The table has some 7,300,000 rows. Let me know how to calculate too.
All helps are greatly appreciated.