Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: FDB: A Query Engine for Factorised Relational Databases   Factorised databases are relational databases that use compact factorised
representations at the physical layer to reduce data redundancy and boost query
performance. This paper introduces FDB, an in-memory query engine for
select-project-join queries on factorised databases. Key components of FDB are
novel algorithms for query optimisation and evaluation that exploit the
succinctness brought by data factorisation. Experiments show that for data sets
with many-to-many relationships FDB can outperform relational engines by orders
of magnitude.

24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics