SageDB: a learned database system
SageDB: a learned database system Kraska et al., CIDR’19
About this time last year, a paper entitled ‘The case for learned index structures’ (part I, part II) generated a lot of excitement and debate. Today’s paper choice builds on that foundation, putting forward a vision where learned models pervade every aspect of a database system.
The core idea behind SageDB is to build one or more models about the data and workload distribution and based on them automatically build the best data structures and algorithms for all components of the database system. This approach, which we call “database synthesis” will allow us to achieve unprecedented performance by specializing the implementation of every database component to the specific database, query workload, and execution environment.
For the want of a model
In the absence of runtime learning and adaptation, database systems are engineered for general purpose use and do not take full advantage of the specific characteristics of the workload and data at hand. The size of the opportunity for SageDB is the gap between such an approach and what is possible when designing a specialised solution with full knowledge of the data distribution and workload.
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