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Identify the missing word(s) in the following sentence within the context of Microsoft Azure. A(n) [?] database is used to store and query information about complex relationships. A(n) [?] contains nodes (information about objects), and edges (information about the relationships between objects). A(n) [?] data store handles two types of information, edges, and nodes. Edges point out the relationships between these entities and Nodes represent entities. The aim of a(n) [?] datastore is to grant an application to efficiently perform queries that traverse the network of edges and nodes and to inspect the relationships between entities.