Курсовая работа: Язык описания информационных моделей EXPRESS

ElectronicMailAddresses : OPTIONAL LIST [1:?] OF Label;

WWWUrls : OPTIONAL LIST [1:?] OF Label;

WHERE

WR1 : EXISTS (TelephoneNumbers) OR EXISTS (FacsimileNumbers) OR

EXISTS (ElectronicMailAddresses) OR EXISTS (WWWUrls);

END_ENTITY;

ENTITY Organization;

Id : INTEGER;

Name : Label;

Description : OPTIONAL STRING;

Roles : LIST [0:?] OF UNIQUE ActorRole;

Addresses : LIST [1:?] OF UNIQUE Address;

INVERSE

IsRelatedBy : SET OF OrganizationRelationship FOR RelatedOrganizations;

Relates : SET OF OrganizationRelationship FOR RelatingOrganization;

Engages : SET OF Person FOR EngagedIn;

UNIQUE

UR1 : Id;

END_ENTITY;

ENTITY OrganizationRelationship;

Name : Label;

Description : OPTIONAL STRING;

RelatingOrganization : Organization;

RelatedOrganizations : SET [1:?] OF Organization;

END_ENTITY;

ENTITY Person;

Id : INTEGER;

FamilyName : OPTIONAL Label;

GivenName : OPTIONAL Label;