How to create a circle object with center(lat/long) and radius(kilo)?

Hi
I want to create a circle in my table, the data I have are the coordinate of center(lat/long) and the radius of the circle. The srid of the table is lat/long.
Did I have to use some fomula to compute the coordinate of three points on the circle? If it's true, is there any example procedure you can show me?
Thanks
Lannie

When a circle is created using SDO_BUFFER in geodetic space,
the result is a circle with stroked arcs (as in arc_densify function).
So the result from SDO_BUFFER will be a valid polygon without arcs,
but approximate circle with straight lines.
For example, in the example given by Dan, this is what you get:
SDO_GEOMETRY(2003, 8307, NULL, SDO_ELEM_INFO_ARRAY(1, 1003, 1), SDO_ORDINATE_ARRAY(-120, 42.09003, -120.03128, 42.086958, -120.06042, 42.0779524, -120.08543, 42.0636292, -120.1046, 42.0449675, -120.11663, 42.0232424, -120.1207, 41.9999365,
-120.11654, 41.9766391, -120.10445, 41.9549369, -120.08526, 41.9363067, -120.06028, 41.9220148, -120.0312, 41.9130321, -120, 41.9099686, -119.9688, 41.9130321,
-119.93972, 41.9220148, -119.91474, 41.9363067, -119.89555, 41.9549369, -119.88346, 41.9766391, -119.8793, 41.9999365, -119.88337, 42.0232424, -119.8954, 42.0449675, -119.91457, 42.0636292, -119.93958, 42.0779524, -119.96872, 42.086958, -120, 42.09003))
siva

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