Promoting Geospatial Service from Information to Knowledge with Spatiotemporal Semantics

Table 3

Table of a service relationship.

Entry	Type	Notion
ID	long	Unique identification
Service _id	varchar	Related service
Service _id	varchar	Related service
MD_id	varchar	Related metadata
r	string	Relationship between services (optional pattern, circulation pattern, sequential pattern)
UNIQUE(Service_id, Service_id)		Unique constraint key
PRIMARY KEY (ID)		Primary key