Video: Dab tsi yog hom database architecture?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Database Architecture yog logically ntawm ob hom : 2-tier DBMS architecture . 3-tier DBMS architecture.
Tsis tas li ntawd, database architecture yog dab tsi?
Database architecture tsom rau kev tsim, kev tsim kho, kev siv thiab kev saib xyuas cov khoos phis tawj uas khaws thiab teeb tsa cov ntaub ntawv rau cov lag luam, cov koom haum thiab cov koom haum. A database architect tsim thiab siv software kom tau raws li cov kev xav tau ntawm cov neeg siv. Tus tsim ntawm DBMS nyob ntawm nws architecture.
Kuj Paub, hom architecture twg siv txhua DBMS? A 3 qib architecture cais nws cov theem ntawm txhua lwm yam raws li qhov nyuaj ntawm cov neeg siv thiab lawv li cas siv cov ntaub ntawv muaj nyob rau hauv lub database. Nws yog feem ntau siv architecture tsim ib DBMS . Database (Data) Tier - Ntawm qib no, cov ntaub ntawv nyob nrog nrog nws cov lus nug ua cov lus.
Ib yam li ntawd, tib neeg nug, peb theem ntawm database architecture yog dab tsi?
Peb theem Architecture ntawm Database . ANSI-SPARC database architecture yog lub hauv paus ntawm feem ntau ntawm cov niaj hnub databases . Cov peb qib nyob rau hauv no architecture yog Physical qib , Kev xav qib thiab sab nraud qib.
Dab tsi yog database thiab hom database?
Cov ntaub ntawv yog cov qauv hauv computer uas txuag, teeb tsa, tiv thaiv, thiab xa cov ntaub ntawv. Peb tau tham txog plaub lub ntsiab hom databases : ntawv databases , desktop database programs, kev sib raug zoo database tswj systems (RDMS), thiab NoSQL thiab object-oriented databases.
Pom zoo:
Lub hom phiaj ntawm hom lus hom lus yog dab tsi?
Hom Lus Specification. Ib Hom Lus Qhia Tshwj Xeeb (CLS) yog ib daim ntawv uas hais tias yuav ua li cas cov khoos phis tawj tuaj yeem hloov mus rau hauv Cov Lus Qhia Nruab Nrab (CIL) code. Thaum ntau hom lus siv tib bytecode, qhov sib txawv ntawm qhov kev pab cuam tuaj yeem sau ua hom lus sib txawv
Dab tsi yog super hom thiab sub hom?
Lub supertype yog ib hom kev sib koom ua ke uas muaj kev sib raug zoo nrog ib lossis ntau hom subtypes. Ib tug subtype yog ib pawg sub-pab pawg ntawm cov koom haum hauv ib lub koom haum uas muaj txiaj ntsig rau lub koom haum thiab uas qhia cov yam ntxwv sib xws lossis kev sib raug zoo sib txawv ntawm lwm pab pawg
Dab tsi yog qhov txawv ntawm Hom C thiab Hom F ntsaws?
Hom F zoo ib yam li C tshwj tsis yog tias nws nyob ib puag ncig thiab muaj qhov sib ntxiv ntawm ob qhov txuas hauv av ntawm sab ntawm lub ntsaws. Hom C plug haum zoo kawg nkaus rau hauv lub qhov (socket) typeF. Lub qhov (socket) yog recessed los ntawm 15 hli, yog li ib feem ntawm cov ntsaws ntsaws tsis tuaj yeem ua rau poob siab
Social engineering yog dab tsi thiab nws lub hom phiaj yog dab tsi?
Social engineering yog lo lus siv rau ntau yam kev ua phem ua phem uas ua tiav los ntawm tib neeg kev sib cuam tshuam. Nws siv kev puas siab puas ntsws los ntxias cov neeg siv kom ua yuam kev kev ruaj ntseg lossis muab cov ntaub ntawv rhiab
Dab tsi yog tus hais lus sau nws lub hom phiaj thiab dab tsi yog yam tseem ceeb uas yuav tsum nco ntsoov txog cov lus hais?
Cov neeg hais lus sau ntawv yog cov ntawv qhia uas tus neeg nthuav qhia siv thaum nthuav qhia qhov kev nthuav qhia. Lawv pab tus neeg nthuav qhia nco txog cov ntsiab lus tseem ceeb thaum muab kev nthuav qhia. Lawv tshwm sim ntawm tus swb thiab tuaj yeem pom tsuas yog los ntawm tus tshaj tawm thiab tsis yog cov neeg tuaj saib