GIS Dictionary

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database generalization

[database structures] The abstraction, reduction, and simplification of features and feature classes for deriving a simpler model of reality or […]

database management system

[database structures] A set of software applications used to create and maintain databases according to a schema. Database management systems

database role

[ESRI software] The database permissions category assigned to a group of users who perform the same types of tasks and,

database statistics

[ESRI software] Mathematically calculated data that describes the state of a database and which the database management system (DBMS) uses

database support

[database structures] The proprietary database platforms supported by a program or component.

dataflow

[data models] The route of data passage through a system.

dataset

[data management] Any collection of related data, usually grouped or stored together.

dataset precision

[data quality] The mathematical exactness or detail with which a value is stored within a dataset, based on the number

datasnooping

[ESRI software] In Survey Analyst, the process of testing each measurement using the W-test.

datum

The reference specifications of a measurement system, usually a system of coordinate positions on a surface (a horizontal datum) or

datum level

[geodesy] A surface to which heights, elevations, or depths are referenced.

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