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Formalizing MongoDB Queries
(CEUR-WS.org, 2017)In this paper, we report on our ongoing work in which we formalize MongoDB, a widely adopted document database system managing complex (tree structured) values represented in a JSON-based data model, equipped with a powerful ... -
Expressivity and Complexity of MongoDB Queries
(Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018)In this paper, we consider MongoDB, a widely adopted but not formally understood database system managing JSON documents and equipped with a powerful query mechanism, called the aggregation framework. We provide a clean ... -
OBDA Beyond Relational DBs: A Study for MongoDB
(CEUR-WS, 2016)The database landscape has been significantly diversified during the last decade, resulting in the emergence of a variety of non-relational (also called NoSQL) databases, e.g., XML and JSON-document databases, key-value ... -
OBDA Over Non-Relational Databases
(CEUR-WS, 2016)The database landscape has been significantly diversified during the last decade, resulting in the emergence of a variety of non-relational (also called NoSQL) databases, e.g., XML and JSON-document databases, key-value ... -
A Generalized Framework for Ontology-based Data Access
(Springer, 2018)The database (DB) landscape has been significantly diversified during the last decade, resulting in the emergence of a variety of non-relational (also called NoSQL) DBs, e.g., XML and JSON-document DBs, key-value stores, ... -
Efficient Handling of SPARQL OPTIONAL for OBDA
(Springer, 2018)OPTIONAL is a key feature in SPARQL for dealing with missing information. While this operator is used extensively, it is also known for its complexity, which can make it a challenge to evaluate queries with OPTIONAL ... -
Formalization and Complexity of MongoDB Queries (Extended Abstract)
(CEUR-WS, 2018)In this paper, we study MongoDB, a widely adopted but not formally understood database system managing JSON documents and equipped with a powerful query mechanism, called the aggregation framework. We define its formal ...
