NDLI: Processing real-time, non-aggregate queries with time-constraints in CASE-DB

Content Provider	IEEE Xplore Digital Library
Author	Ozsoyoglu, G. Du, K. Guruswamy, S. Hou, W.-C.
Copyright Year	1992
Description	Author affiliation: Dept. of Comput. Eng. & Sci., Case Western Reserve Univ., Cleveland, OH, USA (Ozsoyoglu, G.; Du, K.; Guruswamy, S.)
Abstract	The problem of time-constrained query evaluation in a single-user database management system (DBMS) is considered. CASE-DB is a real-time, single user, relational prototype DBMS that uses the relational algebra as its query language. Given a nonaggregate query and a fragment chain for each input relation of the query. CASE-DB uses iterative query evaluation techniques to obtain a response first to a modified version of the query, and then to successively improved versions of the query. CASE-DB controls the risk of overspending the time quota at each step using a risk control technique. For periodically occurring queries, CASE-DB uses incremental query evaluation techniques that make sure that each operator in the query has at least one operand relation which contains the changes in the last period, and is expected to be very small compared to the actual database relation.<>
Starting Page	410
Ending Page	417
File Size	704441
Page Count	8
File Format	PDF
ISBN	0818625457
DOI	10.1109/ICDE.1992.213168
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-02-02
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Query processing Algebra Rail to rail inputs Iron Databases Timing Time factors Resource management Concurrency control Processor scheduling
Content Type	Text
Resource Type	Article

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