PODS

It is our great pleasure to welcome you to the 40th ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems (PODS 2021), held online on June 21-23, 2021, in conjunction with the 2021 ACM SIGMOD International Conference on Management of Data. The online conference is complemented with a local physical event at Xi'an, Shaanxi, China, primarily targeting the strong data management community in China.

Since the first edition of the symposium in 1982, the PODS papers are distinguished by a rigorous approach to widely diverse problems in data management, often bringing to bear techniques from a variety of different areas, including computational logic, finite model theory, computational complexity, algorithm design and analysis, programming languages, and artificial intelligence.

The PODS Symposia study data management challenges in a variety of application contexts, including more recently parallel computation, streaming data, graph data, probabilistic data, information retrieval, ontology and semantic web, and data-driven processes and systems. PODS has a tradition of being the premier international conference on the theoretical and foundational aspects of data management; and the interested reader is referred to the web page https://databasetheory.org/pods for information on the history of this conference series.