论文解析 -- Building An Elastic Query Engine on Disaggregated Storage (NSDI 2020)
摘要：
Introduction 引入Shared-nothing架构 Shared-nothing architectures have been the foundation of traditional query execution engines and data warehousing syst 阅读全文
DeepDB: Learn from Data, not from Queries! （2020，PVLDB）
摘要：
主导的学习组件，是query-based，workload-driven，以一堆有代表性的queryset去实际运行，产生训练集。 The predominant「占主导的」 approach for learned DBMS components is that they capture the 阅读全文
论文解析 -- Efficiently Approximating Selectivity Functions using Low Overhead Regression Models (2020)
摘要：
这篇文章，主体在说，如何降低训练的代价 从两个方面，降低training set大小，降低单个训练样本的label的收集成本 ABSTRACT （现状）Today's query optimizers use fast selectivity estimation techniques but ar 阅读全文
Self-Tuning, GPU-Accelerated Kernel Density Models for Multidimensional Selectivity Estimation
摘要：
Histogram和KDE的分别 参考，https://www.jianshu.com/p/428ae3658f85 Histogram的问题比较明显，首先不平滑，再者分布和区间大小和偏移有很大关系，比如底下两个分布图差别非常大 所以Histogram误差是比较大的 KDE的基本思想比较简单 首先K 阅读全文
论文解析 -- Selectivity Estimation for Range Predicates using Lightweight Models (2019)
摘要：
摘要 （点题）Query optimizers depend on selectivity estimates of query predicates to produce a good execution plan. （当前的方案）When a query contains multiple pr 阅读全文
论文解析 -- LeanStore: In-Memory Data Management Beyond Main Memory
摘要：
INTRODUCTION Managing large data sets has always been the raison d’ˆetre (a French expression commonly used in English, meaning "reason for being" or 阅读全文
论文解析 -- Anti-Caching: A New Approach to Database Management System Architecture
摘要：
INTRODUCTION （Disk-oriented数据库的问题，维护buffer pool）DBMSs invariably（always） maintain a buffer pool of blocks in main memory for faster access. When an ex 阅读全文
论文解析 -- What’s Really New with NewSQL?
摘要：
ABSTRACT （点题）A new class of database management systems (DBMSs) called NewSQL tout（吹捧） their ability to scale modern on-line transaction processing (O 阅读全文
论文解析 -- An Empirical Evaluation of In-Memory Multi-Version Concurrency Control
摘要：
ABSTRACT （点题）Multi-version concurrency control (MVCC) is currently the most popular transaction management scheme in modern database management system 阅读全文
论文解析 -- TiDB: A Raftbased HTAP Database
摘要：
摘要 Hybrid Transactional and Analytical Processing (HTAP) databases require processing transactional and analytical queries in isolation to remove the 阅读全文