40 Xjoin PPTs View free & download

XJoin: A Reactively-Scheduled Pipelined Join Operator PowerPoint PPT Presentation

XJoin: A Reactively-Scheduled Pipelined Join Operator - Efficiently evaluate equi-join in online query processing over distributed ... Out1 (item_id) Out2 (item_id, sum) No more bids for item 1080! CS561 - XJoin. 39 ...

Efficiently evaluate equi-join in online query processing over distributed ... Out1 (item_id) Out2 (item_id, sum) No more bids for item 1080! CS561 - XJoin. 39 ...

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XJoin:%20Faster%20Query%20Results%20Over%20Slow%20And%20Bursty%20Networks PowerPoint PPT Presentation

XJoin:%20Faster%20Query%20Results%20Over%20Slow%20And%20Bursty%20Networks - ... input resumed producing tuples. If yes, resume 1st Stage. ... Resuming Stage 1 as soon as data arrives. Dynamically choosing techniques for producing results ...

... input resumed producing tuples. If yes, resume 1st Stage. ... Resuming Stage 1 as soon as data arrives. Dynamically choosing techniques for producing results ...

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Fjording The Stream An Architecture for Queries over Streaming Sensor Data PowerPoint PPT Presentation

Fjording The Stream An Architecture for Queries over Streaming Sensor Data - Can be exhausted - tens to hundreds of MBs of data / sensor. Wireless ... Alternatives: ripple-join, Xjoin, etc. Partial Results. Feb 28, 2002. Fjording ICDE ...

Can be exhausted - tens to hundreds of MBs of data / sensor. Wireless ... Alternatives: ripple-join, Xjoin, etc. Partial Results. Feb 28, 2002. Fjording ICDE ...

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Joining Punctuated Streams PowerPoint PPT Presentation

Joining Punctuated Streams - ... .00 1522.00 363.00 21281.00 19478.00 1562.00 371.00 22142.00 19958.00 1612.00 376.00 22953.00 20507.00 1662.00 375.00 23754.00 21020.00 1712.00 375.00 24556.00 ...

... .00 1522.00 363.00 21281.00 19478.00 1562.00 371.00 22142.00 19958.00 1612.00 376.00 22953.00 20507.00 1662.00 375.00 23754.00 21020.00 1712.00 375.00 24556.00 ...

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Evaluating Window Joins over Punctuated Streams PowerPoint PPT Presentation

Evaluating Window Joins over Punctuated Streams - Evaluating Window Joins over Punctuated Streams Many s taken from talk by Luping Ding and Elke A. Rundensteiner, CIKM04 Database Systems Research Group

Evaluating Window Joins over Punctuated Streams Many s taken from talk by Luping Ding and Elke A. Rundensteiner, CIKM04 Database Systems Research Group

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Int - Int gration de donn es h t rog nes distribu es Tuy t Tr m DANG NGOC Georges GARDARIN Laboratoire PRiSM Universit de Versailles-Saint-Quentin

Int gration de donn es h t rog nes distribu es Tuy t Tr m DANG NGOC Georges GARDARIN Laboratoire PRiSM Universit de Versailles-Saint-Quentin

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Adaptive Query Processing PowerPoint PPT Presentation

Adaptive Query Processing - Actuate. Measure: monitor cardinalities, resource utilization, etc ... Actuate: switch to a new query plan, hopefully without wasting too much work ...

Actuate. Measure: monitor cardinalities, resource utilization, etc ... Actuate: switch to a new query plan, hopefully without wasting too much work ...

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Eddies: Continuously Adaptive Query Processing PowerPoint PPT Presentation

Eddies: Continuously Adaptive Query Processing - Eddies: Continuously Adaptive Query Processing Based on a SIGMOD 2002 paper and talk by Avnur and Hellerstein. State-of-Art in Query Optimization Given: Database ...

Eddies: Continuously Adaptive Query Processing Based on a SIGMOD 2002 paper and talk by Avnur and Hellerstein. State-of-Art in Query Optimization Given: Database ...

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Database Internals PowerPoint PPT Presentation

Database Internals - Title: Query Execution Techniques Author: Zachary Ives Last modified by: Alon Levy Created Date: 4/11/1999 6:20:08 PM Document presentation format

Title: Query Execution Techniques Author: Zachary Ives Last modified by: Alon Levy Created Date: 4/11/1999 6:20:08 PM Document presentation format

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HiFi Systems: Network-Centric Query Processing for the Physical World PowerPoint PPT Presentation

HiFi Systems: Network-Centric Query Processing for the Physical World - Cheap devices can monitor the environment at a high rate. ... Characteristics of HiFi Systems. Foundational Components. TelegraphCQ. TinyDB. Research Issues ...

Cheap devices can monitor the environment at a high rate. ... Characteristics of HiFi Systems. Foundational Components. TelegraphCQ. TinyDB. Research Issues ...

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Models and Issues in Data Stream Systems PowerPoint PPT Presentation

Models and Issues in Data Stream Systems - Models and Issues in Data Stream Systems Rajeev Motwani Stanford University (with Brian Babcock, Shivnath Babu, Mayur Datar, and Jennifer Widom) STREAM Project ...

Models and Issues in Data Stream Systems Rajeev Motwani Stanford University (with Brian Babcock, Shivnath Babu, Mayur Datar, and Jennifer Widom) STREAM Project ...

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Run-Time Operator State Spilling for Memory Intensive Long-Running Queries PowerPoint PPT Presentation

Run-Time Operator State Spilling for Memory Intensive Long-Running Queries - Stock Price, Volumes,... Reviews, External. Reports, News, ... A equi-Join of stock price, reports, and news on stock symbols. SIGMOD'06. 3. Challenges ...

Stock Price, Volumes,... Reviews, External. Reports, News, ... A equi-Join of stock price, reports, and news on stock symbols. SIGMOD'06. 3. Challenges ...

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Queries%20Over%20Streaming%20Sensor%20Data PowerPoint PPT Presentation

Queries%20Over%20Streaming%20Sensor%20Data - Niagara CQ. s. s. s. Reject? s(C,D,B,A) s ... Niagara Option #1. S. A. SA. SA. SA. 19. CACQ vs. NiagaraCQ Graph. 20. CACQ Review ...

Niagara CQ. s. s. s. Reject? s(C,D,B,A) s ... Niagara Option #1. S. A. SA. SA. SA. 19. CACQ vs. NiagaraCQ Graph. 20. CACQ Review ...

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Self Maintenance of materialized XML views with non-cooperative data sources PowerPoint PPT Presentation

Self Maintenance of materialized XML views with non-cooperative data sources - Self Maintenance of materialized XML views with non ... Delta with hunks : Insert(pos; Xtuple) delete(pos;Xtuple) Replace(pos; Xtupleold, Xtuplenew) ...

Self Maintenance of materialized XML views with non ... Delta with hunks : Insert(pos; Xtuple) delete(pos;Xtuple) Replace(pos; Xtupleold, Xtuplenew) ...

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Eddies: Continuously Adaptive Query Processing - Suppose you can adapt an in-flight query plan. How would you do it? ... Otherwise, we need a cheap means to observe their changes ...

Suppose you can adapt an in-flight query plan. How would you do it? ... Otherwise, we need a cheap means to observe their changes ...

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DAX:%20Dynamically%20Adaptive%20Distributed%20System%20for%20Processing%20CompleX%20Continuous%20Queries PowerPoint PPT Presentation

DAX:%20Dynamically%20Adaptive%20Distributed%20System%20for%20Processing%20CompleX%20Continuous%20Queries - Initial distribution is important for query plan performance. ... (4) Resume execution of new plan. AB. BC. A. B. C (2) All tuples. drained (4) Processing ...

Initial distribution is important for query plan performance. ... (4) Resume execution of new plan. AB. BC. A. B. C (2) All tuples. drained (4) Processing ...

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Adaptive Query Processing with Eddies PowerPoint PPT Presentation

Adaptive Query Processing with Eddies - Choosing which operator to route a given tuple to. The brain of the eddy ... E.g. hash join operator builds a hash table on one relation first, and then ...

Choosing which operator to route a given tuple to. The brain of the eddy ... E.g. hash join operator builds a hash table on one relation first, and then ...

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Impl - Impl mentation XQuery Georges Gardarin Introduction Alg bre XML G n ration des plans

Impl mentation XQuery Georges Gardarin Introduction Alg bre XML G n ration des plans

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The Raindrop Engine: Continuous Query Processing PowerPoint PPT Presentation

The Raindrop Engine: Continuous Query Processing - System returns the results to the user as a stream ... title Dream Catcher /title author last King /last first S. /first /author ...

System returns the results to the user as a stream ... title Dream Catcher /title author last King /last first S. /first /author ...

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Evaluating Window Joins over Punctuated Streams - Luping Ding and Elke A. Rundensteiner. Database Systems Research Group ... Invalidate: probe time list and stop when encountering a time-valid tuple ...

Luping Ding and Elke A. Rundensteiner. Database Systems Research Group ... Invalidate: probe time list and stop when encountering a time-valid tuple ...

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Supporting Streaming Updates in an Active Data Warehouse PowerPoint PPT Presentation

Supporting Streaming Updates in an Active Data Warehouse - the join between a fast stream of source updates and a disk-based relation under ... INL as an opponent, based on a clustered B , in Berkeley DB ...

the join between a fast stream of source updates and a disk-based relation under ... INL as an opponent, based on a clustered B , in Berkeley DB ...

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Supporting topk join queries in relational databases PowerPoint PPT Presentation

Supporting topk join queries in relational databases - Example 2 Same Video DB System - Get top 10 frames most similar to query image ... Block obtain data b tuples at a time, for classic ripple join b = 1 ...

Example 2 Same Video DB System - Get top 10 frames most similar to query image ... Block obtain data b tuples at a time, for classic ripple join b = 1 ...

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XML et les BD PowerPoint PPT Presentation

XML et les BD - XML et les BD 1. Introduction 2. Mod le de donn es 3. Langage de requ tes 4. Produits 5. Conclusion 6. Ex cution/Optimisation de Requ tes

XML et les BD 1. Introduction 2. Mod le de donn es 3. Langage de requ tes 4. Produits 5. Conclusion 6. Ex cution/Optimisation de Requ tes

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Models%20and%20Issues%20in%20Data%20Stream%20Systems PowerPoint PPT Presentation

Models%20and%20Issues%20in%20Data%20Stream%20Systems - Handles scan and processing rate mismatch. PODS 2002. 31 ... Sliding windows as first-class construct. Awkward in SQL, needs reference to timestamps ...

Handles scan and processing rate mismatch. PODS 2002. 31 ... Sliding windows as first-class construct. Awkward in SQL, needs reference to timestamps ...

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Query Processing and Networking Infrastructures PowerPoint PPT Presentation

Query Processing and Networking Infrastructures - Day 2: Seed some cross-fertilized research. Especially with networking ... Day 2: Research Synergies w/Networking. Queries as indirection, revisited ...

Day 2: Seed some cross-fertilized research. Especially with networking ... Day 2: Research Synergies w/Networking. Queries as indirection, revisited ...

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XML et les BD - CondCond ::= Expr Op Constant | Expr Op Expr | 'contains(' Expr , Text ' ... 'Expr ::= '$'VarName/XPath. ReturnClause ::= 'return' XMLElement ...

CondCond ::= Expr Op Constant | Expr Op Expr | 'contains(' Expr , Text ' ... 'Expr ::= '$'VarName/XPath. ReturnClause ::= 'return' XMLElement ...

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Adaptive%20Query%20Processing%20Part%20II PowerPoint PPT Presentation

Adaptive%20Query%20Processing%20Part%20II - Pick access methods (AMs) on the driven tables (scan, hash, or index) Order the driven tables ... Static optimization: explore all possibilities and pick best ...

Pick access methods (AMs) on the driven tables (scan, hash, or index) Order the driven tables ... Static optimization: explore all possibilities and pick best ...

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Interactive Query Processing PowerPoint PPT Presentation

Interactive Query Processing - Interactive Query Processing. 6. data access: scan-based ( ) or index-based ... Interactive Query Processing. 9. Design goals in supporting user control ...

Interactive Query Processing. 6. data access: scan-based ( ) or index-based ... Interactive Query Processing. 9. Design goals in supporting user control ...

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Models and Issues in Data Stream Systems - Streams of trading data, stock tickers, news feeds ... No real-time services. Assume precise data ... Real-time requirements. Data stale/imprecise ...

Streams of trading data, stock tickers, news feeds ... No real-time services. Assume precise data ... Real-time requirements. Data stale/imprecise ...

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Online Query Processing A Tutorial PowerPoint PPT Presentation

Online Query Processing A Tutorial - Usage examples. Basic sampling techniques and estimators. Preferential data delivery ... Examples of online techniques. Underlying technology ...

Usage examples. Basic sampling techniques and estimators. Preferential data delivery ... Examples of online techniques. Underlying technology ...

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Partial QueryEvaluation in Internet Query Engines PowerPoint PPT Presentation

Partial QueryEvaluation in Internet Query Engines - Want 1998 Red BMW. No accidents. 20% avg. model price ... Red Used BMW Cars (carId, model, price, otherinfo) Not Exists (carId, model, price, otherinfo) ...

Want 1998 Red BMW. No accidents. 20% avg. model price ... Red Used BMW Cars (carId, model, price, otherinfo) Not Exists (carId, model, price, otherinfo) ...

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Adaptive Query Processing with Eddies - Junior. Joe. Level. Name. Enrolled Courses. Students. Enrolled ... Junior. Joe. Junior. Joe. Jr. Joe. No matches; Eddy processes. the next tuple. Output ...

Junior. Joe. Level. Name. Enrolled Courses. Students. Enrolled ... Junior. Joe. Junior. Joe. Jr. Joe. No matches; Eddy processes. the next tuple. Output ...

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Approximate Query Processing slides based on the following tutorials PowerPoint PPT Presentation

Approximate Query Processing slides based on the following tutorials - Juggle data between buffer and side disk. keep buffer full of 'interesting' items ... implication for juggle mechanism. process gets item from buffer that ...

Juggle data between buffer and side disk. keep buffer full of 'interesting' items ... implication for juggle mechanism. process gets item from buffer that ...

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Lecture 18: Data Integration PowerPoint PPT Presentation

Lecture 18: Data Integration - 1. CS511 Advanced Database Management Systems. Lecture 18: Data ... DI for specialized domains (e.g., bioinformatics) on-the-fly DI, entity-centric DI ...

1. CS511 Advanced Database Management Systems. Lecture 18: Data ... DI for specialized domains (e.g., bioinformatics) on-the-fly DI, entity-centric DI ...

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Data Stream Query Processing PowerPoint PPT Presentation

Data Stream Query Processing - Solution: Using Gigascope SQL-based DSMS ... Solution: Using Gigascope SQL-based DSMS. Track TCP synchronization and acknowledgement packets ...

Solution: Using Gigascope SQL-based DSMS ... Solution: Using Gigascope SQL-based DSMS. Track TCP synchronization and acknowledgement packets ...

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Interactive Query Processing - Interactive Query Processing. 2. Motivation: Nature of querying ... Interactive Query Processing. 9. Online Reordering (Raman et al. '99,'00) ...

Interactive Query Processing. 2. Motivation: Nature of querying ... Interactive Query Processing. 9. Online Reordering (Raman et al. '99,'00) ...

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Kein Folientitel PowerPoint PPT Presentation

Kein Folientitel - transforming a 'buggy' model into something else. A buggy model is a model. where the constraints defined. as part of the metamodel. do not hold. ...

transforming a 'buggy' model into something else. A buggy model is a model. where the constraints defined. as part of the metamodel. do not hold. ...

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RPJ: Producing Fast Join Results on Streams through Ratebased Optimization PowerPoint PPT Presentation

RPJ: Producing Fast Join Results on Streams through Ratebased Optimization - Join the largest hash partition with the corresponding disk partition of the other relation. ... design of a stream-join algorithm includes deciding. the ...

Join the largest hash partition with the corresponding disk partition of the other relation. ... design of a stream-join algorithm includes deciding. the ...

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Eddies: Continuously Adaptive Query Processing - During query execution the query plan chosen by the query optimizer ... a tuple the eddy one ticket is debited from the eddies running count for that operator ...

During query execution the query plan chosen by the query optimizer ... a tuple the eddy one ticket is debited from the eddies running count for that operator ...

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Interactive Query Processing - querying = extracting information from data sets ... scan. reorder. index. scan. 8/25/09. Interactive Query Processing. 8. Framework for Online Reordering ...

querying = extracting information from data sets ... scan. reorder. index. scan. 8/25/09. Interactive Query Processing. 8. Framework for Online Reordering ...

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Xjoin PowerPoint PPT Presentations