Graph database models can be defined as those in which data structures for the schema
and instances are modeled as graphs or generalizations of them, and data manipulation is …

Knowledge bases, data bases and object-oriented systems (referred to in the paper as
Object-Centered systems) all rely on attributes as the main construct used to associate …

This database theory book provides a focused presentation of the core material on relational
databases, and presents a number of advanced topics in a unified framework. Some of the …

This paper studies the RDF model from a database perspective. From this point of view it is
compared with other database models, particularly with graph database models, which are …

We presented a specification of the integration of heterogeneous data based on
correspondence rules. We showed how a unique specification can served many purposes …

We investigate graph transformations, defined using Datalog-like rules based on acyclic
conjunctive two-way regular path queries (acyclic C2RPQs), and we study two fundamental …

We demonstrate the power of object identities (oids) as a database query language
primitive. We develop an object-based data model, whose structural part generalizes most of …

We present a graph-based data model called GDM where database instances and database
schemas are described by certain types of labeled graphs called instance graphs and …

This survey article introduces into the essential concepts and methods underlying rule-
based query languages. It covers four complementary areas: declarative semantics based …

We are motivated by applications within design, planning and scheduling areas, where
current research appears to be focused on syntactic issues of performance and volume. We …