Attributive description of objects

Attributive information of a record about the object falls into the semantics of the corresponding map object and can be taken into account when forming the object's conventional sign on the map. The assignment of certain attributive fields of the database table containing information about the object and the indication of the corresponding semantic characteristics of the cartographic object are performed by the administrator at the stage of setting up the program.

Semantics can be simple or semantics-classifiers (lists).

Simple semantics contain the meaning that is recorded into it. This value must match the type of data defined for this semantic characteristic in the digital classifier of map objects. Semantics can be of different types: character (string), numeric, date type and others.

The semantics-classifier (list) is of type-code from the classifier, this means that the values of semantics are integers to which the symbol values are assigned. For such semantics, a list is pre-populated, where the correspondence of numerical values to character strings is indicated. In the semantics-classifier, the numeric code of the record, defined in the list of possible values of semantics, is stored. The list itself is stored in the digital classifier of map objects (in the file RSC).

The fields of the database tables associated with the semantics-classifiers should also contain code values from the list of allowed semantics.