| Address Alias |
A place name which is associated with an address. Address Aliases include buildings names, historical monuments, educational facilities, and more. |
| Address Anomaly |
An address whose location is illogical. The address does not follow the standard rules of Washington, DC's addressing grid system. Types of address anomalies include, but are not limited to: wrong block, out of sequence, wrong side of street. Read the MAR Address Anomalies Report* for full details. |
| Address Point |
A map point over the location of an address. Multiple address points may exist within a lot. |
| Administrative and Other Boundaries |
Manmade legal boundary descriptions for the purpose of governance and management. |
| Advisory Neighborhood Commissions (ANC) |
Bodies of local government in Washington, D.C. There are 37 ANCs. They consider a wide range of policies and programs affecting neighborhoods, including traffic, parking, recreation, street improvements, liquor licenses, zoning, economic development, police protection, sanitation and trash collection, and the District's annual budget. The ANCs are the body of government with the closest official ties to the people in a neighborhood. |
| Aerial Photography |
The taking of photographs from the air with a camera mounted on an aircraft. |
| Air Rights Lots |
Air right lots are established by real property tax administration to reflect a party's right to construct an improvement above an existing area of land that is not owned by the constructor. |
| Appropriations |
Land set aside at the time of the original founding and platting of the city for use by the U.S. Federal Government. There are only 17. |
| Basemap |
The necessary GIS layers properly symbolized to create a common looking digital map of the District of Columbia |
| Business and Economic Development |
Economic activities or employment. For example, resources describing labor, revenue, commerce, industry, and specialized incentive areas. |
| Citrix |
The server system that allows District employees to use applications such as ArcGIS and Pictometry software via the Intranet. |
| Cultural and Society |
The characteristics of societies and cultures. For example, resources describing natural settlements, anthropology, archaeology, traditional beliefs, manners and customs, and religion. |
| Detailed Metadata |
This metadata satisfies the requirements of the Federal Geographic Data Committee (FGDC), as augmented by additional elements defined by ESRI. It is provided for all datasets with a Status of Available. |
| DC GIS |
Refers to all the hardware, software, and databases that provide the central GIS functionality for the District of Columbia government. |
| Demographic |
A shortened term for 'population characteristics'. Demographics include race, age, income, mobility (in terms of travel time to work or number of vehicles available), educational attainment, home ownership, employment status, and even location. Distributions of values within a demographic variable, and across households, are both of interest, as well as trends over time. |
