plan and create databas
Designing and Implementing Databases with Microsoft SQL Server 2000 Enterprise Edition
Ngày tải lên :
04/11/2013, 16:15
... who creates a database object such as a table, index, view, trigger, etc, is the database
object
owner for that database object. Permission to create database objects must be given by the
database ... used to analyze queries and determine which indexes should be
created on a table and to select and create an optimal set of indexes and statistics for a SQL Server 2000
database without requiring ... We calculate the specifics for this
database and then add the size of the model database. All new databases are based on the model database.
The model database has an initial size of 1 MB....
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How to Free Yourself of ANY Disease, Stop Fatigue, And Create Unstoppable Energy in Your Life.
Ngày tải lên :
07/11/2013, 21:15
...
low in MHz, and high in acid. You create an energy deficit and an alkaline deficit!
Oh oh… look out, here comes dis-ease.
How to Free Yourself of ANY Disease, Stop Fatigue,
And Create Unstoppable ... to live and expand.
In order to get rid of the rats, you must clean the trash first. In order to be completely
healthy, vibrant and energetic you must clean the trash in your body, and create ...
what I promise for you, then simply email me and I will issue a prompt and courteous
refund – no questions asked – and you may still keep the package and all the bonuses at
no cost to you. Click...
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Tài liệu Connecting to Access and Oracle Databases docx
Ngày tải lên :
24/12/2013, 01:17
... OleDbConnection(connectionString);
// create an OleDbCommand object
OleDbCommand myOleDbCommand = myOleDbConnection.CreateCommand();
// set the CommandText property of the OleDbCommand object to
// a ... OleDbConnection(connectionString);
// create an OleDbCommand object
OleDbCommand myOleDbCommand = myOleDbConnection.CreateCommand();
// set the CommandText property of the OleDbCommand object to
// a ... Northwind Access database using an
OleDbConnection object and retrieve a row from the Customers table. Notice that you
use an OleDbCommand and OleDbDataReader object to run a SQL statement and read...
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- 0
Tài liệu High-Performance Parallel Database Processing and Grid Databases- P1 pdf
Ngày tải lên :
21/01/2014, 18:20
... These include data warehousing and online analytic
processing (OLAP) applications, data mining, genome databases, and multiple
media databases manipulating unstructured and semistructured data. Therefore,
it ... first join attribute exists in Table 1
and Table 2, and the second join attribute exists in Table 2 and Table 3, and the last
join attribute exists in Table 3 and Table 4. Therefore, these join operations ... general architecture of databases working in a Grid envi-
ronment. The Grid database architecture typically works in a wide area, spanning
multiple institutions, and has autonomous and heterogeneous...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P2 docx
Ngày tải lên :
21/01/2014, 18:20
... strengths and weaknesses of the following parallel database architectures:
ž
Shared-everything
ž
Shared-nothing
ž
Shared-something
1.9. Describe the relationship between parallel databases and Grid databases.
1.10. ... Skew is an important factor in paral-
lel database query processing. Therefore, understanding skew modeling is a critical
part of understanding parallel database query processing. In Section 2.4, ... any given time, that is, the
High-Performance Parallel Database Processing and Grid Databases,
by David Taniar, Clement Leung, Wenny Rahayu, and Sushant Goel
Copyright 2008 John Wiley & Sons,...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P3 docx
Ngày tải lên :
21/01/2014, 18:20
... Iyer and Dias (ICDE 1990) and DeWitt et al.
(1992) discuss systems issues in parallel database sorting.
Parallel sorting for databases uses external sorting methods. Yamane and Take
(1987) and ... the
normalization process.
High-Performance Parallel Database Processing and Grid Databases,
by David Taniar, Clement Leung, Wenny Rahayu, and Sushant Goel
Copyright 2008 John Wiley & Sons, ... be different, and after the buckets are cre-
ated bucket placement and arrangement are performed to make the workload of
the three processors balanced. For example, buckets A; B,andG go to processor
1,...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P4 pptx
Ngày tải lên :
21/01/2014, 18:20
... the join
query result and the product of the two tables R and S. For example, if there are
100 and 200 records from table R and table S, respectively, and the join between
R and S produces 50 records, ... ratios
σ
R
and σ
j
.
6.6. Explain the main difference between equations 6.7 and 6.12 in terms of the selectivity
ratio σ
R
in equation 6.7 and σ
R1
in equation 6.12.
6.7. Explain the similarity and ... factor
and thus the scheme will simplify algorithm design and implementation.
6.8 BIBLIOGRAPHICAL NOTES
Group-by and aggregate functions are tightly related. Early work on aggregate
functions and...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P5 pptx
Ngày tải lên :
21/01/2014, 18:20
... both operands are the
same they do not satisfy the predicate, and hence return a false result. The dif-
ference between subset and sublist originated from the basic difference between
sets and lists. ... table and a foreign key (FK) on the other
table. Primary keys are normally indexed to prevent duplicate values that exist
in that table. PK-FK join is common in relational databases because a database
is ... processors, and FRI-1 replicates the
whole index. Since extra benefits of PRI-1 and FRI-1 are not obvious, at least in
parallel one-index search query processing, maintaining global index as in PRI-1
and...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P6 doc
Ngày tải lên :
21/01/2014, 18:20
... buckets: 11, 13, 22,
23, 32 and 33, and 3 processors), load balancing is achieved by spreading and
combining partitions to create more equal loads. For example, buckets 11, 22
and 23 are placed at processor ... not be included in plan correction and only a small
part of the query plan is likely to be corrected. On the other hand, we might choose
to correct a large portion of the query plan hoping to obtain ... access plan, whereas execution scheduling is for incor-
porating parallelism scheduling into the query access plans. Parallelization models
High-Performance Parallel Database Processing and Grid Databases,
by...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P7 ppt
Ngày tải lên :
21/01/2014, 18:20
... main differences between distributed databases and multidatabase
systems.
10.3. Discuss the suitability of parallel databases, distributed databases, and multidatabase
systems in the Grids.
10.4. ... top-down
approach in Grid databases and a bottom-up approach in distributed databases.
10.8. Compare and contrast two-phase commit (2PC) and three-phase commit (3PC) in a
homogenous distributed database system.
10.9. ... www.verypdf.com to remove this watermark.
10.2 Distributed Database Systems and Multidatabase Systems 295
T
1
T
2
T
n
LDB–Local Database
LDBMS–Local Database Management Systems
–Distributed DBMS boundary
T
1
,...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P8 pptx
Ngày tải lên :
21/01/2014, 18:20
... homogeneous and synchronous distributed database sys-
tems cannot be implemented in Grid databases because of architectural lim-
itations (Grid databases are heterogeneous and asynchronous).
(2) Multidatabase ... (distributed and multi-
database), and the recovery model for DBMS without global information (Grid
database).
Figure 12.8 shows the recovery model for an individual database site. The stable
database ... protocol, and
explain how it solves the concurrency issues in the Grid.
11.5. Compare and contrast the difference between GCC and any other concurrency control
protocols (e.g., distributed databases and...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P9 pdf
Ngày tải lên :
21/01/2014, 18:20
... clustering, outliers, etc. However, this book focuses on database and
database processing and considers data mining processes from a database processing
perspective. It covers commonly used data ... parallel data mining (Chapters 16 and 17) is twofold:
High-Performance Parallel Database Processing and Grid Databases,
by David Taniar, Clement Leung, Wenny Rahayu, and Sushant Goel
Copyright 2008 ... in the Grid database:
(1) The Grid database handles comparatively larger volumes of data than tradi-
tional distributed databases. The nature of the transactions is long-running,
and hence aborts...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P10 pptx
Ngày tải lên :
21/01/2014, 18:20
... candidate generation. The table gives fre-
quent 3-sequences, and we would like to use the joining and pruning to create
candidate 4-sequences.
By joining the first sequence <(1 2) (3)> and ... Outline the main differences between:
a. Querying and association rules,
b. Querying and sequential patterns,
c. Querying and clustering, and
d. Querying and classification.
Use examples to highlight ... of
these candidate itemsets, and prunes all infrequent candidate 2-itemsets.
Ž
In the third iteration, it again joins each of the frequent 2-itemsets and generates the
following potential candidate...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P11 doc
Ngày tải lên :
26/01/2014, 15:20
... Benchmark Handbook for Database and Transaction Systems, Second edition,
Morgan Kaufmann, 1993.
Hameurlain, A. and Morvan, F., “A Cost Evaluator for Parallel Database Systems”, Pro-
ceedings of Database ... Relational Database Systems: Why, How
and Beyond”, Proceedings of Database and Expert Systems Applications (DEXA),
pp. 302–312, 1996.
Haran, B., et al., “Prototyping Bubba, A Highly Parallel Database ... Speedup and Scaleup on Large Databases”, Proceedings of
Measurement and Modeling of Computer Systems (SIGMETRICS), pp. 245–246, 1990.
Ganguly, S., Goel, A., and Silberschatz, A., “Efficient and Acurate...
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Tài liệu High-Performance Parallel Database Processing and Grid Databases- P12 ppt
Ngày tải lên :
26/01/2014, 15:20
... 2002.
Deloch, S., “Databases, Web Services, and Grid Computing—Standards and Directions”,
Proceedings of Euro-Par, pp. 3, 2003.
Koparanova, M.G. and Risch, T., “High-Performance GRID Stream Database Manager ... Talia, D., and Trunfio, P., “Parallel and Grid-Based Data Mining - Algo-
rithms, Models and Systems for High-Performance KDD”, Proceedings of the Data
Mining and Knowledge Discovery Handbook, pp. ... Control and Data Replication Strategies for
Large-scale and Wide-distributed Databases”, Proceedings of Database Systems for
Advanced Applications (DASFAA), 2001.
Vazhkudai, S., Tuecke, S., and Foster,...
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