Schema-free Data Models
Many new DBMSs provide (key,value) stores
- key is a unique identifier (cf. URI)
- value is an arbitrarily complex "object"
- e.g. a text document (often structured, e.g. Wiki, XML)
- e.g. a JSON object: (property,value) list
- e.g. an RDF triple (e.g.
<John,worksFor,UNSW>)
- objects may contain keys to link to other objects
Tables can be simulated by a collection of "similar" objects.
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