The Data Source Description Vocabulary

Describes the relationship between an aggregation that is composed out of several components.

• dsd:hasAggregation ^op
• dsd:hasAggregationComponent ^op
• dsd:isDisjoint ^dp

A dsd:Association describes a relationship between two instances of dsd:Concept. There are three dsd:Association subclasses for aggregation, inheritance, and reference associations.

• dsd:hasAssociationMember ^op
• dsd:hasAssociationDescriptor ^dp

• dsd:AggregationAssociation ^c
• dsd:InheritanceAssociation ^c
• dsd:ReferenceAssociation ^c

An Attribute describes a property of a Concept. DSD also provides OWL data properties for the description of certain attribute characteristics, such as, nullable or unique. Example: If a Concept represents a relational table, its attributes correspond to the columns.

• dsd:isAttributeOf ^op
• dsd:isOfDataType ^op
• dsd:hasAttributeDescriptor ^dp

• dsd:consistsOfAttribute ^op
• dsd:hasAttribute ^op

A representation of a structural part of a data source. Example: A dsd:Concept can represent a table or a view of a relational database or a class in object-oriented structures.

• dsd:hasAggregation ^op
• dsd:hasAggregationComponent ^op
• dsd:hasAssociationMember ^op
• dsd:hasChild ^op
• dsd:hasParent ^op

A generic class for representing data sources. Example: A dsd:DataSource can represent structured data such as relational databases, semi-structured data like XML files, or NoSQL databases such as graph databases or wide-column stores. A dsd:DataSource can be assigned to an instance of dsd:DataSourceType.

• dsd:hasSchema ^op
• dsd:isOfDatasourceType ^op

This class provides instances of the most common data source types, which can be assigned to instance of dsd:DataSource.

References to a Primary key and consists of one or more Attributes.

Describes the relationship between several child Concepts and their parent.

• dsd:hasChild ^op
• dsd:hasParent ^op
• dsd:isDisjoint ^dp

Identifies a Concept and consists of one or more Attributes.

Describes a regular relationship between two or more Concepts.

Instances of dsd:Schema provide an optional hierarchy level between an instance of dsd:DataSource and instances of dsd:Concept. Schemas allow the grouping of concepts and are very common in enterprise databases.

A Primary or Foreign Key consists of one or several Attributes.

Describes the connection between an AggregationAssociation and its Aggregation.

Describes the connection between an AggregationAssociation and one of its components.

Describes the edges from an Association to its Members (Parent, Child, Aggregation, Component).

• dsd:hasAggregation ^op
• dsd:hasAggregationComponent ^op
• dsd:hasChild ^op
• dsd:hasParent ^op

Describes the number of Attributes a Concept or Association comprises.

Describes the connection between an InheritanceAssociation and one of its childs.

Describes the number of components a Datasource comprises.

Connects an Association or an Concept with its foreign key.

Describes the connection between an InheritanceAssociation and a parent Concept.

Connects an Association or an Concept with it primary key.

Describes the schemas a data source may consist of.

Describes an Attributes's connection to its Concept or Association.

Describes a components connection to its Datasource.

Describes an Attribute with an XLS Datatype.

Describes the type of a Data Source. This vocabulary provides some Individuals that can be used.

Describes to which data source a schema belongs to.

A PrimaryKey, Concept or any kind of Association references to another Concept, ForeignKey or Association.

Gives a value of the average (character) length of instances of this concept. E.g., row entries in a MySQL DB.

Describes the constraint that is defined on a foreign key, which action should be carried out if the referenced primary key is deleted.

Describes which constraint is defined on a foreign key if the referenced primary key content is updated.

• dsd:defaultValue ^dp

• Provides an default value for an attribute.

Provides annotations for an association.

• dsd:isComplete ^dp
• dsd:isDisjoint ^dp

Provides annotations for an attribute.

• dsd:defaultValue ^dp
• dsd:isAutoIncrement ^dp
• dsd:isNullable ^dp
• dsd:isUnique ^dp
• dsd:maxCharacterLength ^dp
• dsd:ordinalPosition ^dp

Provides annotations for a concept.

• dsd:avgInstanceLength ^dp
• dsd:noOfInstances ^dp

Foreign key descriptor: A textual description of what should happen if the reference of this foreign key is modified (updated/deleted).

• dsd:constraintOnDelete ^dp
• dsd:constraintOnUpdate ^dp

• dsd:isAutoIncrement ^dp

• If the attribute automatically increments on a new insertion of a new value.

Defines whether an inheritance association is complete. If property is set to FALSE, the association is incomplete.

Describes whether the children of an inheritance association are disjoint. If property is set to FALSE, the children are overlapping.

• dsd:AggregationAssociation ^c
• dsd:InheritanceAssociation ^c

• dsd:isNullable ^dp

• If the attribute can contain NULL values.

• dsd:isUnique ^dp

• Describes if an attribute is unique or not.

• dsd:maxCharacterLength ^dp

• Maximum character length of this attribute, given in the number of bits.

• dsd:noOfInstances ^dp

• Number of instances of a concept/association.

• dsd:ordinalPosition ^dp

• The ordinal position of the attribute to the concept, this information might not always be available (depending on the data source).

Describes the connection between an AggregationAssociation and its Aggregation.

Connects an Association or an Concept with it primary key.

Describes an Attribute with an XLS Datatype.

Describes the type of a Data Source. This vocabulary provides some Individuals that can be used.

Describes to which data source a schema belongs to.

• dsd:defaultValue ^dp

• Provides an default value for an attribute.

• dsd:isAutoIncrement ^dp

• If the attribute automatically increments on a new insertion of a new value.

Defines whether an inheritance association is complete. If property is set to FALSE, the association is incomplete.

Describes whether the children of an inheritance association are disjoint. If property is set to FALSE, the children are overlapping.

• dsd:AggregationAssociation ^c
• dsd:InheritanceAssociation ^c

• dsd:isNullable ^dp

• If the attribute can contain NULL values.

• dsd:isUnique ^dp

• Describes if an attribute is unique or not.

• dsd:maxCharacterLength ^dp

• Maximum character length of this attribute, given in the number of bits.

• dsd:noOfInstances ^dp

• Number of instances of a concept/association.

• dsd:ordinalPosition ^dp

• The ordinal position of the attribute to the concept, this information might not always be available (depending on the data source).