Qhov txawv ntawm Molap Rolap thiab Holap yog dab tsi?
Qhov txawv ntawm Molap Rolap thiab Holap yog dab tsi?

Video: Qhov txawv ntawm Molap Rolap thiab Holap yog dab tsi?

Video: Qhov txawv ntawm Molap Rolap thiab Holap yog dab tsi?
Video: Qhov Txawv Ntawm Lus Hmoob Thiab Lus Mab Mawb 2024, Kaum ib hlis
Anonim

ROLAP stands rau Relational Online Analytical Processing. MOLAP stands rau Multidimensional Online Analytical Processing. HOLAP sawv cev rau Hybrid Online Analytical Processing. ROLAP tsis yog vim ib daim ntawv luam ntawm cov ntaub ntawv los khaws cia hauv Cov kev pab cuam txheeb xyuas cov ntaub ntawv folders.

Tsis tas li ntawd, qhov txawv ntawm Rolap thiab Molap yog dab tsi?

MOLAP yog siv rau cov ntaub ntawv tsawg tsawg thiab hauv cov ntaub ntawv no yog khaws cia rau hauv ntau qhov array. Hauv MOLAP , Dynamic multidimensional saib ntawm cov ntaub ntawv yog tsim. 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.

Ib yam li ntawd, Rolap piv txwv yog dab tsi? Microsoft Access's PivotTable yog ib qho piv txwv ntawm peb-tiered architecture. Txij li thaum ROLAP siv cov ntaub ntawv sib raug zoo, nws yuav tsum tau ua ntau lub sijhawm thiab / lossis qhov chaw disk los ua qee yam haujlwm uas cov ntaub ntawv ntau yam tsim los rau.

Tsis tas li ntawd, Molap yog dab tsi?

MOLAP (multidimensional online analytical processing) yog online analytical processing (OLAP) uas indexes ncaj qha mus rau hauv cov ntaub ntawv multidimensional. Vim li no, MOLAP yog, rau feem ntau siv, sai dua thiab ntau tus neeg siv teb ntau dua li kev txheeb xyuas kev txheeb xyuas online (ROLAP), qhov tseem ceeb rau lwm txoj hauv kev MOLAP.

Dab tsi yog qhov txawv ntawm OLAP thiab cov ntaub ntawv warehouse?

A cov ntaub ntawv warehouse ua lub repository khaws keeb kwm cov ntaub ntawv uas tuaj yeem siv rau kev txheeb xyuas. OLAP yog Online Analytical processing uas tuaj yeem siv los txheeb xyuas thiab ntsuas cov ntaub ntawv nyob rau hauv ib lub warehouse . Cov lub tsev khaws khoom muaj cov ntaub ntawv los ntawm ntau qhov chaw.

Pom zoo: