Video: Row store thiab kem khw hauv SAP HANA yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Hauv ib Kem khw table, Data yog khaws cia ntsug. Nyob rau hauv ib tug pa database, cov ntaub ntawv yog khaws cia hauv Kab raws li qauv piv txwv li horizontally. SAP HANA khw cov ntaub ntawv hauv ob qho tib si kab thiab Kem raws li qauv. Qhov no muab Performance optimization, yooj thiab cov ntaub ntawv compression nyob rau hauv HANA database.
Hauv qhov no, Row store thiab kem khw yog dab tsi?
Nyob rau theem pib, kab khw yog qhov zoo rau kev ua lag luam. Kem khw yog ib qho zoo heev rau cov qauv lus nug analytical heev. Kab khw muaj peev xwm sau cov ntaub ntawv sai heev, whereas a kem khw yog txaus ntawm aggregating loj ntim ntawm cov ntaub ntawv rau ib tug subset kab.
Tsis tas li ntawd, Hana khaws cov ntaub ntawv li cas? Khaws cov ntaub ntawv hauv SAP HANA nws txawv heev los ntawm kev ua li ntawd nyob rau hauv ib txwm disk-based database. Thawj thiab pom tseeb tshaj plaws yog qhov SAP HANA yog ib qho kev sib raug zoo database tswj system (RDBMS), qhov twg cov ntaub ntawv yog khaws cia nkaus hauv kev nco, tsis yog kev sib raug zoo cov ntaub ntawv ua khaws cia tag nrho ntawm spinning disks.
Hais txog qhov no, kab ke khw hauv SAP HANA yog dab tsi?
Kum khw yog ib feem ntawm SAB HANA database thiab tswj cov ntaub ntawv hauv columnar txoj hauv kev SAB HANA nco. Kem rooj yog khaws cia hauv Kum khw cheeb tsam. Cov Kum khw muab kev ua tau zoo rau kev sau ntawv thiab tib lub sijhawm ua kom zoo rau kev nyeem ntawv.
Row Store yog dab tsi?
Kab khw . Ntawm no cov ntaub ntawv rooj yog khaws cia nyob rau hauv ib theem zuj zus kab . Thawj cov ntaub ntawv mus rau hauv thawj kab , tus tom ntej hauv qhov thib ob kab thiab lwm yam. Tag nrho kab yog khaws cia rau hauv qhov chaw nco kis tau. Nws muaj kab raws li nyob rau hauv-nco relational cov ntaub ntawv cav uas yog optimized rau siab ua hauj lwm ntawm kev sau ntawv
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