Metadata - dab tsi yog qhov no?

Muaj ntau ntau databases. Yuav kom to taub li cas lawv yog, nws yog tsim nyog los xav txog lawv txheem. Tab sis muaj ib tug me me nthuav dav pab - metadata. Qhov no yog dab tsi tshab xyuas tag nrho cov muaj nyob rau ntaub ntawv. Rau cov uas lawv tau tsim thiab li cas siv li cas?

Yuav ua li cas yog metadata?

Nws yuav tsum tau muab sau tseg ntawd ib formulations ntawm cov tswvyim no tsis muaj nyob. Yog li, lub metadata - qhov no yog ib lub npe ntawm lub database ntaub ntawv. Mas siv plaub designations ntawm lub sij hawm:

1. Tej zaum hais subchannel cov lus qhia txog cov ntaub ntawv siv.
2. Li ntawd, hu cov yam ntxwv uas piav txog cov essence. Lawv yuav tsum mus nrhiav, txheeb xyuas, ntsuam xyuas thiab tswj qhov tseem ceeb nyob rau hauv lub database. Ntau thiaj hu ua ib qho tseem ceeb txheej ntawm ib tug tej yam muaj pes tsawg tus ntawm cob qhia muaj nyob rau hauv xam daim ntawv thiab siv tau nyob rau hauv ib tug qhia tau meej heev daim ntawv no, ces koj yuav nrhiav tau cov kev kawm kwv. Qhov no hais yog siv nyob rau hauv tus neeg mob qhov twg nws yog tsim nyog los saib rau lub essence, cov kev pab thiab cov chaw.
3. Cov ntaub ntawv los ntawm ib tug tag nrho cov kev cai uas piav qhia txog thaj chaw ntawm ib tug repository ntawm cov ntaub ntawv.
4. Ntaub ntawv hais txog cov yam ntxwv ntawm lub web page (thaum twg, uas nws yog tsim los ntawm tus sau).

Qhov txawv ntawm cov ntaub ntawv thiab metadata

Yuav ua li cas kom paub qhov txawv lawv? Lub fact tias ib tug unambiguous sib cais yog feem ntau tsis tau. Yog vim li cas? Cia wb mus ze zog saib cov piv txwv:

1. Ib yam dab tsi yuav ua nyob rau hauv ob qho tib si lub luag hauj lwm. Piv txwv li, lub npe ntawm qhov tsab xov xwm yuav tsum tau saib raws li metadata caij, thiab raws li cov ntaub ntawv uas yog kis tau mus rau tus nyeem ntawv.
2. Tseem hloov chaw. Wb hais tau ib tug neeg sau ib poetic ua hauj lwm. Nws yog cov ntaub ntawv. Composer, relying rau lus, tsim ib tug suab paj nruas muaj pes tsawg leeg thiab txuas cov ntawv nyeem. Nyob rau hauv cov ntaub ntawv no, nws yog hloov dua siab tshiab rau hauv metadata. Txhua yam nyob rau kev siv. Feem ntau, xws li mob tej zaum yuav yog vim muaj cov xaav ntawm ib tug taw tes ntawm view rau lub hauv paus ntawm lawv txiav txim (nyob ntawm no plays lub luag hauj lwm ntawm lub namespace thiab siv system).
3. Lub peev xwm los tsim meta ... -metadannyh tsom rau lub axiom ntawm kev xaiv. Qhov no raws li nram no los ntawm lub fact tias yuav luag tej ntaub ntawv system tau nws tus yam ntxwv yuav tsum tsim.

Metadata cov ntaub ntawv nyob rau hauv computers

Lawv siv thiab lawv tau pom nyob rau hauv cia li workflows. Yog hais tias ib tug kev pab cuam muaj peev xwm mus ua hauj lwm nrog tus txheem thiab cov qauv ntawm cov ntaub ntawv, lawv yuav tsum tau hloov dua siab tshiab mus rau lwm lub hom ntawm cov ntaub ntawv uas tso cai rau koj mus free neeg siv los ntawm ib tug ntau yam ntawm seeb thiab niaj hnub ua. Ib qho piv txwv yog txoj kev loj hlob, uas tso cai rau koj mus saib graphics nrog txawv extensions. Koj yuav tau nco qab qhov sib txawv suab kaw, films thiab ntau lwm yam.

Metadata nyob rau hauv lub ntiaj teb no network

Nyob rau hauv Internet nrog lawv yog nqa tawm mus nrhiav qhov tsim nyog pab tau ntaub ntawv ntawm cov loj loj ntawm cov ntaub ntawv. Los ntawm no taw tes ntawm view, lub metadata uas yog tsim los ntawm txhais tes, yog ntawm kuj zoo kawg nqi vim hais tias ntawm nws cov meaningfulness. Raws li qhov no hom ntawm cov ntaub ntawv yuav ua raws li keywords, cim npe, thiab ib tug xov tooj ntawm lwm yam hais. Metadata - yog hais tias luv luv qhia txog ntawm qhov chaw. Thaum Ntsuam xyuas cov kev tshawb fawb xyaw ib tug ob peb qhov chaw, yog hais tias lawv yuav qhia rau lawv tib yam ntsiab lus, ces lawv sib nrig sib reference rau txhua lwm yam yuav tseem ceeb tshaj li ib txwm chaw.

kev faib metadata

Yuav ua li cas kom paub qhov txawv lawv? Yeej, tus faib yog nqa tawm los ntawm ib tug ntawm ob tug hauv paus ntsiab lus:

1. Cov ntsiab lus. Metadata yog siv los piav qhia txog ib tug cov ntaub ntawv, muaj kev pab los yog nws cov txheem (piv txwv li, lub tawm xov xwm - "yuav ua li cas ua noj qos yaj ywm").
2. Raws li accessories. Metadata yuav siv tau los qhia txog ib yam dab tsi tag nrho los yog nyob rau hauv ib feem. Yog li, lub npe ntawm cov zaj duab xis yog hais txog tag nrho nws, thiab ib tug rov piav qhia qhia tsuas yog nyob rau ib tug tej yam ib feem.

Yog hais tias metadata - ib tug txheej ntawm dependencies inferencing tuition, nyob rau hauv uas cov ntaub ntawv lawv muab faib ua 3 hom:

1. "Nyoos" cov ntaub ntawv. Fundamentals ntawm cov ntaub ntawv Security.
2. Metadata uas piav txog cov ntsiab lus. Lawv, nyob rau hauv lem, yog tseem siv.
3. Lub metadata uas yuav siv tau los ua ib zajlus kom xaus.

Cov metadata ua ib ke.

Peb ntawm cov feem ntau nrhiav-tom qab kawm

Thov nrhiav peb cov chav kawm ntawv, uas yog tam sim no dav siv:

1. Internal metadata. Qhov no yog cov ntaub ntawv uas qhia txog cov kev tivthaiv qhov chaw ntawm tej yam, lawv cov qauv thiab dab tsi nws nruab nrab yog. Raws li ib qho piv txwv, qhov luaj li cas thiab cov hom ntaub ntawv.
2. Administrative metadata. Yuav tsum tau rau cov ua ntawm cov ntaub ntawv, raws li tau zoo raws li rau lub sij hawm ntawm tej yam. Piv txwv li, leej twg yog tus sau, editor, thaum cov ntaub ntawv yog tsim.
3. Piav txog yam metadata. Yog siv los tuab qhov ntawm cov ntaub ntawv thiab nws cov cwj pwm (uas qeb siv tau rau dab tsi ntxiv yog kev cob cog rua).

metadata hom

Yog li ntawd hu ua tus qauv, uas yog siv los nqa tawm ib tug formal piav qhia ntawm ib co pawg ntawm cov kev pab (cov chaw, cov khoom thiab cov zoo li no).
Feem ntau nws muaj ib tug tej yam txheej uas characterizes tus kwv nyob rau hauv nqe lus nug. Rau lub hom phiaj no, muab, zog, thiab metadata ntsiab.
Classified los ntawm cov tau thiab paub meej txog cov piav kev pab.

tej zaum teeb meem

Thaum metadata yuav tshwm sim kev ua yuam kev? Tsis muaj ntaub ntawv los yog nkag txwv - cov no yog cov tseem ceeb ua rau cov teeb meem. Tsis tas li ntawd, metadata upload kev ua yuam kev no tshwm sim nyob rau hauv tus neeg mob qhov twg cov ntaub ntawv no, tab sis nws yog puas ntsoog. Lub ntsiab yog vim li cas rau lub xeev no ntawm account rau peb: hnav khoom, teeb meem tej yam ntawm ib tug neeg cov kev pab cuam (feem ntau yog cov kab mob) thiab kev kawm tiav ntawm cov ntaub ntawv, rau cov uas yog vim li cas cov ntaub ntawv fwm kom zoo.

Raws li, qhov metadata nqi nyob rau hauv lub cais thiab systematization ntawm network ntaub ntawv yuav tsis tsum overestimated. Yog li ntawd, xav rau optimize koj tus kheej lub website tsuas yuav tsum tau paub txog lawv.