3_05 - МиСПИСТ (ПБД Хранилища данных и olap)
DESCRIPTION
ÂTRANSCRIPT
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- 5. OLAP
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*5.1. OLAP. .
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*- (BI, Business Intelligence) , , , .
().
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* , - () OLTP (Online Transaction Processing)-.
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* OLTP- .
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, OLTP- .
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* .
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* -, .
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* , , .
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* , , OLTP-, , , , , .
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*
Cluster
( - OLTP)
( / )
- (, SQL)
(OLAP)
(Data Mining)
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* :
- SQL;
. OLAP, ;
, Data Mining.
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* -, , , , . , , .
, , , . , .
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* OLTP- .
, .
, OLTP- .
Data
Cluster
(OLTP)
(OLTP)
(OLTP)
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* OLTP- . , . OLTP-.
: ; , .
: , ; OLTP-; OLTP-;OLTP- , , .
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* .
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.
.
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* ( ) , , , .
, .
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Cluster
(OLTP)
(OLTP)
(OLTP)
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*
Data
Cluster
(OLTP)
(OLTP)
(OLTP)
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*5.2. OLAP
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*OLAP (Online Analytical Processing) , , .
OLAP- , - . OLAP- . OLAP
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*OLTP On-Line Transaction Processing,
OLAP On-Line Analytical Processing
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* ()
Data
Cluster
(OLTP)
(OLTP)
(OLTP)
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* - , OLTP- ; ;
- ;
- , ;
- ;
- , ;
- , OLTP-.
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*OLAP OLTP. OLTP ,
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*OLAP OLTP. OLAP , . ( )
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*5.3. OLAP
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* . . . - . . . . . . . .
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*5.4. OLAP-
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*
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*, 1. 2.
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*, 4. 3.
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* OLAP
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* , (Transaction facts).
, " " (Snapshot facts).
, (Line-item facts).
, (Event or state facts).
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* .
( ) , , ( ) .
, , , , "" .
" " .
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* OLAP-
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* OLAP- , , . , , "" . , . , : , ; ; ; ""
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* OLAP- , , , , . , , . : ; ; ; . () ().
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* OLAP- , , . , , , . - . : ; ; (OLAP); (data mining).
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* OLAP- OLAP-
OLAP-
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* OLAP- , (, , ) , OLAP-.
, OLAP-. - , OLAP- SQL-, GROUP BY, , .
(, StatSoft SPSS), Microsoft Office Excel Microsoft Office Visio.
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* OLAP- Microsoft Office 2010 OLAP-:
Excel SQL Server Analysis Services (SSAS) Excel;
Excel SSAS , Excel;
Visio , , Visio.
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* OLAP- Microsoft Office Visio , . SQL Server 2008 Visio 2007 : , , ; Visio, Office -.
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* OLAP- OLAP- , , , , .
, , OLAP-, , Oracle Database Server Microsoft SQL Server.
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*5.5. OLAP
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MOLAP (Multidimensional OLAP)
ROLAP (Relational OLAP)
HOLAP (Hybrid OLAP) OLAP -
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MOLAP - .
, .
, .
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.
.
.MOLAP -
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MOLAP , .
, , .
, .
, .MOLAP -
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ROLAP - ROLAP- , , -, .
. .
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.
ROLAP .
ROLAP , MOLAP.
ROLAP , MOLAP.
.ROLAP -
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.
, MOLAP. MOLAP . "" .ROLAP -
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HOLAP - , ,
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OLAP
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.
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:
(fact table), , , .
(dimensional table) , , . .
, . .
.
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, . OLAP / Reporting "" .
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, . , - .
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,
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:
(fact table), , , .
(dimensional table), "". , , . . ( ).
, . .
""
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"" , .
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*