What does a coded value domain in a geodatabase signify?

A coded value domain in a geodatabase represents a set of permissible values that have associated codes and their equivalent representations. This structure is valuable in enforcing data integrity and consistency within the database. By specifying a coded value domain, you ensure that users can only input predefined values, which reduces errors and standardizes the data entry process. For example, instead of allowing free-text input for a field that might represent types of land use, a coded value domain could define specific codes for residential, commercial, agricultural, etc., making data management more efficient and organized.

The other options do not accurately describe the function of a coded value domain. While ranges of numerical values are useful in many contexts (like numeric domains), they do not encompass the specific association of codes to representation that defines coded value domains. Classifications of geospatial data types pertains to how data is categorized and does not involve the permissible value setup found in coded value domains. Lastly, a method of securing data against unauthorized access relates to security measures, which does not align with the purpose of a coded value domain focused on value management within the data structure.