Neeg neeg rau zaub mov technology

neeg neeg rau zaub mov technology muab ob ywj siab interacting dab - neeg rau zaub mov thiab tus thov kev pab, cov kev twb kev txuas ntawm lawv ib tug network.

Servers yog hu ua cov dab lub luag hauj lwm rau kev pab los ntawm lub database thiab cov ntaub ntawv system, thiab cov qhua tuaj noj mov - cov txheej txheem uas xa daim ntawv thov thiab waits rau ib lo lus teb los ntawm cov neeg rau zaub mov.

Client-neeg rau zaub mov qauv yog siv nyob rau hauv constructing lub system ntaub ntawv ua rau lub hauv paus ntawm lub database, raws li zoo raws li lub koj system. Muaj yog lub thiaj-hu ua cov ntaub ntawv-neeg rau zaub mov architecture uas yog ho sib txawv los ntawm tus neeg neeg rau zaub mov.

Cov ntaub ntawv nyob rau hauv cov ntaub ntawv neeg rau zaub mov system khaws tseg rau ib cov ntaub ntawv neeg rau zaub mov (Novell NetWare los yog WindowsNT neeg rau zaub mov), thiab lawv yuav ua los ntawm cov lag luam los ntawm cov workstations "desktop database", xws li Access, Paradox, FoxPro, etc.

Database nyob rau ntawm lub workstation, thiab cov ntaub ntawv manipulation ua los ntawm ntau cov neeg sab nraud thiab uncoordinated txheej txheem. Tag nrho cov ntaub ntawv li no kis tau ntau tshaj ib tug network neeg rau zaub mov mus rau lub workstation, uas slows cov kev ceev ntawm cov ntaub ntawv ua.

neeg neeg rau zaub mov technology yog DVR qhov hauj lwm ntawm lub ob (yam tsawg kawg) daim ntaub ntawv - cov neeg thiab cov servers uas muab cov kev khiav dej num ntawm lawv. Rau cia thiab ncaj qha manipulation ntawm cov ntaub ntawv neeg rau zaub mov teb, ib qho piv txwv ntawm cov uas yuav ua tau SQLServer, Oracle, Sybase, thiab lwm tus neeg.

Tus neeg siv interface muab ib tug neeg raws li kev tsim kho ntawm uas siv tshwj xeeb cov cuab yeej los yog desktop database. Zajlus kom cov ntaub ntawv ua yog tua tej rau tus neeg, thiab ib nrab nyob rau hauv ib tug neeg rau zaub mov. Ua ib tug thov mus rau tus neeg rau zaub mov yog ua los ntawm cov neeg, feem ntau yog nyob rau hauv lub SQL lus. Txais kev thov tiav los ntawm cov neeg rau zaub mov thiab cov neeg (s), qhov tshwm sim yog xa rov qab.

Cov ntaub ntawv yog ua nyob rau hauv tib lub qhov chaw uas lawv yuav muab - rau neeg rau zaub mov, yog li ib tug loj npaum li cas ntawm lawv yog tsis xa thoob plaws lub network.

Qhov zoo ntawm ib tug neeg-neeg rau zaub mov architecture

neeg neeg rau zaub mov technology theem ntaub ntawv xws zoo system:

• cia siab rau

Cov ntaub ntawv hloov kho yog ua database neeg rau zaub mov siv cov kev sib pauv mechanism uas imparts sau ua ib pawg zog xws hauj lwm raws li: 1) atomicity, uas muab cov ntaub ntawv kev ncaj ncees rau txhua tus lw tiav; 2) kev ywj pheej muas ntawm txawv neeg siv; 3) kev txhaum kam - txuag tau lub ntsiab ntawm cov kev sib pauv.

• Scalability, piv txwv li, System muaj peev xwm tsis yog nyob rau hauv lub xov tooj ntawm cov neeg siv thiab tus nqi ntawm cov ntaub ntawv tsis muaj kev hloov lub software siv.

neeg neeg rau zaub mov technology txhawb txhiab ntawm cov neeg siv thiab gigabytes ntawm cov ntaub ntawv nyob rau ntawm lub qhov tsim nyog kho vajtse platform.

• Security, piv txwv li, txhim khu kev qha cov ntaub ntawv tiv thaiv los ntawm tsis tau tso cai rau siv.
• Yooj Yim. Nyob rau hauv daim ntaub ntawv uas ua hauj lwm nrog cov ntaub ntawv, faib cov zajlus kom khaubncaws sab nraud povtseg: ib tug neeg interface; kev cai ntawm logic ua; ntaub ntawv los xyuas.

Raws li twb tau sau tseg, ib cov ntaub ntawv-neeg rau zaub mov technology, tag nrho peb khaubncaws sab nraud povtseg cov chav hauv ib zaug xwb monolithic daim ntawv thov uas sau rau ib tug workstation, thiab tag nrho cov kev hloov nyob rau hauv lub khaubncaws sab nraud povtseg tau ua rau ib tug kev hloov kho rau daim ntawv thov, txawv versions ntawm tus neeg thiab neeg rau zaub mov, thiab koj xav mus nqa tawm software hloov khoom dua tshiab rau tag nrho cov workstations .

Client-neeg rau zaub mov technology nyob rau hauv ib tug ob-theem daim ntawv thov muab tag nrho cov zog rau cov tsim ntawm tus neeg siv interface rau tus neeg, thiab tag nrho cov kev khiav dej num ntawm cov ntaub ntawv database tswj - nyob rau hauv ib tug neeg rau zaub mov, ib lub lag luam txoj cai tej zaum siv ob lub neeg rau zaub mov thiab cov neeg.

Peb-theem daim ntawv tso cai ib tug theem nrab, uas siv lub lag luam kev cai, uas yog cov feem ntau kuj sib txawv thiab Cheebtsam.

Ntau ntau ntau ntau cia saj zawg zog thiab nqi-zoo hloov uas twb muaj lawm daim ntaub ntawv rau lossi updatable ua lag ua luam uas yuav tsum tau.