Using ArcCatalog

ArcInfo and ArcEditor
attributes and create indexes for
the values the attributes
contain. You can only modify
and delete columns in the
attribute table that are not
maintained by ArcInfo. Index an
attribute to improve the performance
of operations that access
its contents, such as selecting
features with specific attribute
values. If you index the shape
column, a spatial index will be
created, which improves the
performance of any operation
that retrieves features by
location. After modifying the
values in a column, delete the
existing index and add a new
one.
In addition to new attributes,
you can add redefined attributes.
Add a redefined
attribute to combine or divide
the values in existing attributes.
Redefined attributes are useful
for customizing how the values
in a table are displayed. For
example, you might choose to
show one redefined attribute
that concatenates values rather
than showing two separate,
adjacent columns.
7. Type an appropriate input
width and display width for
the attribute’s values, then
type the maximum number of
decimals the values can
have, if appropriate. Valid
input widths may be presented
as a dropdown list.
8. Type a more descriptive
name for the attribute, if
appropriate.
9. Click OK.
The new attribute appears in
the Properties dialog box.
10. Click Apply to save your
changes.
11. Click OK.
9
The new attribute
appears in the
Properties dialog box.
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