QuoteRef: rousN12_1986

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heterogeneous database
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information as a hint
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optimistic update for concurrency control


Roussopoulos, N., Kang, H., "Principles and techniques in the design of ADMS+-", IEEE Computer, pp. 19-25, December 1986. Google

19+ ;;Quote: ADMS+- integrates ADMS+ on a mainframe with a large number of workstation databases called ADMS-
19 ;;Quote: ADMS- is a trimmed version of ADMS+ without security and concurrency control subsystems
19 ;;Quote: ADMS- is an intelligent cache database access subsystem for ADMS+
19 ;;Quote: ADMS+- has an incremental access model: it reuses previously found access paths to data
20 ;;Quote: in ADMS+-, updates are logged but not broadcast; if an access path is outdated, it is updated and cached; low cost
20 ;;Quote: in ADMS+-, common access paths are globalized on ADMS+ while rare ones are localized on ADMS- at the requesting workstation
20 ;;Quote: ADMS+- assumes a high bandwidth with no delay between workstations and mainframe
20 ;;Quote: if 'almost up-to-date' data is ok, ADMS- will process a query on the workstation without waiting for current updates
21 ;;Quote: every change to ADMS+ data relations are recorded on a backlog for transmission to ADMS- workstations
21 ;;Quote: since ADMS- caches updates, it only needs the latest updates to a relation from ADMS+

Related Topics up

ThesaHelp: references p-r (245 items)
Topic: heterogeneous database (6 items)
Group: distributed database   (6 topics, 188 quotes)
Topic: information as a hint (18 items)
Topic: updating information in a distributed system (50 items)
Topic: optimistic update for concurrency control (35 items)

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