Using ArcCatalog

disk
A storage medium consisting of a round, flat, spinning plate
coated with a magnetic material for recording digital information.
display type
The mode of command representation on a computer screen. The
display type controls whether you see a command’s image, its
caption, or both, when it appears on a toolbar or in a menu.
documentation
In ArcCatalog, text in an item’s metadata describing where the
data came from, attribute definitions, and so on. Unlike properties,
which are automatically derived from the data source,
documentation must be manually entered using the ArcCatalog
metadata editor.
double precision
The level of coordinate exactness based on the possible number
of significant digits that can be stored for each coordinate.
Datasets can be stored in either single or double precision.
Double-precision geometries store up to 15 significant digits per
coordinate (typically, 13 to 14 significant digits), retaining the
accuracy of much less than one meter at a global extent.
double-coordinate precision
See double precision.
edit box
See text box.
enclosure
A file describing the contents of an item that is included or
contained within the metadata. Enclosing files in metadata works
the same way as enclosing files in an e-mail message.
event
1. An outcome or occurrence that happens when a user interacts
with an application. For example, in a case where clicking a button
triggers the closing of a form, the event is the closing of the form.
2. A geographic location stored in tabular rather than spatial form.
Event types include address events, route events, xy events, and
temporal events. Address events are features that can be located
based on address matching with a street network or other address
identifier, such as ZIP Codes or lot numbers. Route events are
linear, continuous, or point features occurring along a base route
system. Xy events are simple coordinate pairs that describe the
location of a feature, such as a set of latitude and longitude
degrees. Temporal events are used to describe observations
through time of particular objects or groups of objects.
event location
See event.
extent
The coordinate pairs defining the minimum bounding rectangle
(xmin, ymin and xmax, ymax) of a data source. All coordinates for
the data source fall within this boundary.
feature
1. A group of spatial elements which together represent a realworld
entity. A complex feature is made up of more than one
group of spatial elements—for example, a set of line elements with
the common theme of roads representing a road network.
2. A representation of a real-world object on a map. Features can
be represented in a GIS as vector data—points, lines, or
polygons—or as cells in a raster data format. To be displayed in a
GIS, features must have geometry and locational information.
feature attribute table
See attribute table.
GLOSSARY 265