NDLI: Automating layout of relational databases

Content Provider	IEEE Xplore Digital Library
Author	Agrawal, Sanjay Chaudhuri, Surajit Das, Abhinandan Narasayya, Vivek
Copyright Year	2003
Description	Author affiliation: Microsoft Res., USA (Sanjay Agrawal; Surajit Chaudhuri; Abhinandan Das; Vivek Narasayya)
Abstract	The choice of database layout, i.e., how database objects such as tables and indexes are assigned to disk drives can significantly impact the I/O performance of the system. Today, DBAs typically rely on fully striping objects across all available disk drives as the basic mechanism for optimizing I/O performance. While full striping maximizes I/O parallelism, when query execution involves coaccess of two or more large objects, e.g., a merge join of two tables, the above strategy may be suboptimal due to the increased number of random I/O accesses on each disk drive. Here, we propose a framework for automating the choice of database layout for a given database that also takes into account the effects of coaccessed objects in the workload faced by the system. We formulate the above as an optimization problem and present an efficient solution to the problem that judiciously takes into account the trade-off between I/O parallelism and random I/O accesses. Our experiments on Microsoft SQL server show the superior I/O performance of our techniques compared to the traditional approach of fully striping each database object across all disk drives.
Sponsorship	IEEE Comput. Soc. Tech. Committee on Data Eng
Starting Page	607
Ending Page	618
File Size	599553
Page Count	12
File Format	PDF
ISBN	078037665X
DOI	10.1109/ICDE.2003.1260825
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-05
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relational databases Disk drives Indexes Information retrieval Decision support systems Time measurement
Content Type	Text
Resource Type	Article

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