Video: Rolap thiab Molap yog dab tsi hauv cov ntaub ntawv warehouse?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
ROLAP sawv rau Relational Online Analytical Processing whereas; MOLAP stands rau Multidimensional Online Analytical Processing. Hauv ob qhov xwm txheej, ROLAP thiab MOLAP data yog khaws cia rau hauv lub ntsiab lub tsev khaws khoom . ROLAP deals nrog loj ntim ntawm cov ntaub ntawv hos, MOLAP deals nrog txwv cov ntaub ntawv Cov ntsiab lus khaws cia hauv MDDBs.
Hauv qhov no, Rolap yog dab tsi hauv cov ntaub ntawv warehouse?
Relational online analytical processing ( ROLAP ) yog ib daim ntawv ntawm kev txheeb xyuas hauv online (OLAP) uas ua cov kev soj ntsuam ntau yam kev sib txawv ntawm cov ntaub ntawv khaws cia rau hauv cov ntaub ntawv sib txheeb es tsis yog hauv ntau qhov chaw khaws ntaub ntawv (uas feem ntau suav tias yog OLAP tus qauv).
Ib yam li ntawd, Dolap yog dab tsi? Desktop On-Line Analytic Processing ( DOLAP ) yog ib-tier, desktop-based OLAP thev naus laus zis. Nws muaj peev xwm rub tawm ib qho me me hypercube los ntawm lub hauv paus ntsiab lus, feem ntau yog los ntawm cov ntaub ntawv mart lossis cov ntaub ntawv warehouse, thiab ua ntau qhov kev ntsuam xyuas thaum txiav tawm ntawm qhov chaw.
Tsis tas li ntawd, puas muaj kev sib piv zoo ntawm Rolap thiab Molap?
Multidimensional Online Analytical Processing ( MOLAP ): MOLAP yog siv rau cov ntaub ntawv tsawg tsawg thiab hauv cov ntaub ntawv no yog khaws cia rau hauv ntau qhov array. Lub ntsiab Qhov sib txawv ntawm ROLAP thiab MOLAP yog, In ROLAP , Cov ntaub ntawv yog nqa los ntawm cov ntaub ntawv-warehouse. Ntawm qhov tod tes, hauv MOLAP , Cov ntaub ntawv yog nqa los ntawm MDDBs database.
OLAP piv txwv yog dab tsi?
OLAP Cube txhais. Ib OLAP Lub voos xwmfab yog cov qauv ntaub ntawv uas tso cai rau kev soj ntsuam ceev ntawm cov ntaub ntawv raws li ntau qhov Dimensions uas txhais cov teeb meem kev lag luam. Lub voos xwmfab multidimensional rau kev tshaj tawm kev muag khoom yuav yog, rau piv txwv , muaj li ntawm 7 Dimensions: Tus Neeg Muag Khoom, Tus Nqi Muag Khoom, Thaj Chaw, Khoom Muag, Thaj Chaw, Lub Hlis, Xyoo.
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