Geometric reference surface embedded in 3D Euclidean space formed by an ellipse that is rotated about a main axis.

Framework for understanding significant relationships among the entities of some environment, and for the development of consistent standards or specifications supporting that environment.

Assignment of a permanent, unique, and unambiguous identifier to an item.

Information system on which a register is maintained.

a data model based on set theory. Each set has elements that can be uniquely defined by a primary key. A table (relation) stores all records for a set. Each record in a table has the same columns for attribute values. Relationships between tables are constructed by storing the key to a record in the other table (a foreign key).

Closeness of the relative positions of features in a dataset to their respective relative positions accepted as or being true.

Position of a point with respect to the positions of other points.

Act or process of correcting a fault or deficiency.

Collection and interpretation of information about an object without being in physical contact with the object.

Conversion of digital graphics data into visual form.

a symbolic mechanism to encode data. Using computers, involves a data model, a data structure and its implementation.

Invocation of an operation by a client.

least detectable difference in a measurement; in a geographic context, resolution applies to all components (time, space and attribute) according to the measurement framework. Not identical to accuracy.