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Autor:
Marianne Winslett, Vanessa Braganholo
Publikováno v:
ACM SIGMOD Record. 50:41-43
Welcome to ACM SIGMOD Record's series of interviews with distinguished members of the database community. I'm Marianne Winslett, and today I have here with me Viktor Leis who won the 2018 ACM SIGMOD Jim Gray Dissertation Award for his thesis entitled
Autor:
Adnan Alhomssi, Viktor Leis
Publikováno v:
Proceedings of the VLDB Endowment. 16:1426-1438
MVCC-based snapshot isolation promises that read queries can proceed without interfering with concurrent writes. However, as we show experimentally, in existing implementations a single long-running query can easily cause transactional throughput to
Autor:
Alexander van Renen, Viktor Leis
Publikováno v:
Proceedings of the VLDB Endowment. 16:1413-1425
The cloud facilitates the transition to a service-oriented perspective. This affects cloud-native data management in general, and data analytics in particular. Instead of managing a multi-node database cluster on-premise, end users simply send querie
Publikováno v:
ACM Transactions on Database Systems. 47:1-46
We present the Height Optimized Trie (HOT), a fast and space-efficient in-memory index structure. The core algorithmic idea of HOT is to dynamically vary the number of bits considered at each node, which enables a consistently high fanout and thereby
Publikováno v:
Datenbank-Spektrum. 22:11-22
Recently proposed index structures, that combine trie-based and comparison-based search mechanisms, considerably improve retrieval throughput for in-memory database systems. However, most of these index structures allocate small memory chunks when re
Publikováno v:
ACM SIGMOD Record. 50:60-67
Modern query engines rely heavily on hash tables for query processing. Overall query performance and memory footprint is often determined by how hash tables and the tuples within them are represented. In this work, we propose three complementary tech
Publikováno v:
Data Management on New Hardware.
Publikováno v:
Proceedings of the 2022 International Conference on Management of Data.
Publikováno v:
Datenbank-Spektrum. 20:199-210
Remote Direct Memory Access (RDMA) is a networking protocol that provides high bandwidth and low latency accesses to a remote node’s main memory. Although there has been much work around RDMA, such as building libraries on top of RDMA or even appli