The ratio or relationship between a distance or area on a map and the corresponding distance or area on the ground.

Scale Bar

A map element that shows the map scale graphically.

Scaled Map Inset

Using the Map Insets tool, a scaled map inset depicts the zoomed contents of the source frame within the destination frame.


1. The structure or design of a database or database object such as a table. 2. The definition of the database. The schema can either be modeled in UML using a CASE tool or defined directly within ArcCatalog using wizards.

Selected Set

A subset of the features in a layer or records in a table. ArcMap provides several ways to select features and records graphically or according to their attribute values.


The node type used by Session Manager to track editing sessions.


A vector data storage format for storing the location, shape, and attributes of geographic features. A shapefile is stored in a set of related files and contains one feature class.

Simple Edge

In a geodatabases, a line feature that corresponds to a single network element in the logical network.

Sketch Point

Used with the Template Tool, a sketch point is a point on the map at which you click to indicate the position of a point feature.


The process of moving a feature to coincide exactly with coordinates of another feature within a specified snapping distance, or tolerance.

Snapping Distance

The distance within which snapping occurs between points or lines.

Snapping Environment

Settings in the ArcMap Editor's Snapping Environment window and Editing Options dialog box that help you establish exact locations in relation to other features. You determine the snapping environment by setting a snapping tolerance, snapping properties, and a snapping priority.

Snapping Priority

During ArcMap editing, the order in which snapping will occur by layer. You can set the snapping priority by dragging the layer names in the Snapping Environment window to new locations.

Snapping Properties

In ArcMap editing, a combination of a method for what part of the shape you will snap to and a shape to which the feature will snap. You can set your snapping properties to have a feature snap to a vertex, edge, or endpoint of features in a specific layer. For example, a layer snapping property might let you snap to the vertices of buildings. A more generic, sketch-specific snapping property might let you snap to the vertices of a sketch you're creating.

Snapping Tolerance

During ArcMap editing, the distance within which the pointer or a feature will snap to another location. If the location being snapped to (vertex, boundary, midpoint, or connection) is within the distance you set, the pointer will automatically snap. For example, if you want to snap a power line to a utility pole and the snapping tolerance is set to 25 pixels, whenever the power line comes within a 25-pixel range of the pole it will automatically snap to it. Snapping tolerance can be measured using either map units or pixels.


Spans are used with the Template tool in Designer. Spans, or constructed lines, indicate the location of a linear feature you are placing (for example, distribution main or primary overhead electric line segment). Spans are placed between sketch points.

Spatial Bookmark

In ArcMap, identifies a particular geographic location that you want to save and refer to later.


Structured Query Language. A syntax for defining and manipulating data from a relational database. Developed by IBM in the 1970s, it has become an industry standard for query languages in most relational database management systems.


Defines the stages where the session or design may be in your process flow (e.g., In Design, In Progress, and Pending Approval). Used interchangeably with Status.


Defines the stages where the session or design may be in your process flow (e.g., In Design, In Progress, and Pending Approval). Used interchangeably with State.

Stored Display

This functionality allows you to save and recall various combinations of map layers and layer rendering properties.


An organized collection of elements that you add to your map display or use to make your maps. Styles include elements such as symbols, scale bars, North arrows, and colors. You might create different styles that contain the specific elements for the specific types of maps you make.

Style Manager

The tool that you use to create new styles and edit existing ones.

Style sheet

In metadata documents, an XSL style sheet, which selects data from an XML file, applies functions and formatting to the data and then specifies how to present the data.


In geodatabases, although all objects in a feature class or object class must have the same behavior and attributes, not all objects have to share the same default values and validation rules. You can group features and objects into subtypes. Subtypes differentiate objects based on their rules.


A graphic pattern used to represent a feature. For example, line symbols represent arc features; marker symbols, points; shades symbols, polygons; and text symbols, annotation. Many characteristics define symbols, including color, size, angle, and pattern.


The criteria used to determine symbols for the features in a layer. A characteristic of a feature may influence the size, color, and shape of the symbol used.

System, (documents, page templates, stored displays, etc.)

ArcFM allows system and user versions of various layout and map production elements (documents, page templates, stored displays, favorites, etc). Those created by administrators for use by all users connected to the geodatabase are called System documents, stored displays, etc. They may be accessed by anyone connected to the geodatabase, but created and edited only by an administrator.

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