graph Assumptions for Reasoning and Validation Open and Closed World AssumptionThe Open World Assumption (OWA) is the assumption that a statement may be true irrespective whether it is known to be true. This in contrast to a Closed World

graph Graph Pattern Matching Semantics Graph query languages typically feature graph pattern matching. This is the process of finding all matches for a given graph pattern. Graph pattern matching can (partly) be used for schema-instance consistency checking or

graph Motivation for Adding Structure to Graph Data Graph databases are typically used where the interconnectivity or topology of data is of importance (Abiteboul [1996], Angles and Gutierrez [2008]). Data follows the graph data model where: data is represented by graphs

database Role of NoSQL solutions in current information management ecosystems Introduction Most relational database systems satisfy the ACID properties: Atomicity, Consistency, Isolation, and Durability. The CAP theorem states that for distributed data stores at most two of the following properties can be guaranteed:

graph Subgraph Pattern Matching Query Semantics We often query graphs for certain patterns, for example retrieving all patients and their friends. These queries are so called containment queries and find all subgraphs that match certain patterns in a graph.