Cov txheej txheem:
Video: Cov lus nug xam phaj ntawm SQL yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Sab saum toj 50 SQL Interview Cov Lus Nug & Lus Teb
- DBMS yog dab tsi?
- RDBMS yog dab tsi?
- Piv txwv: SQL ntawv Server.
- Dab tsi yog SQL ntawv ?
- Database yog dab tsi?
- Cov rooj thiab Fields yog dab tsi?
- Qhov tseem ceeb yog dab tsi?
- Dab tsi yog tus yuam sij tshwj xeeb?
Ntawm no, lo lus nug SQL yog dab tsi?
SQL ntawv stands rau Structured Query Language. Nws yog alanguage siv los cuam tshuam nrog cov ntaub ntawv, piv txwv li los tsim adatabase, tsim ib lub rooj hauv cov ntaub ntawv, khaws cov ntaub ntawv lossis hloov kho lub rooj hauv database thiab lwm yam. SQL ntawv yog ANSI (AmericanNational Standards Institute) tus qauv.
Tsis tas li ntawd, SQL commands yog dab tsi? Cov lus txib yog CREATE, ALTER, DROP, RENAME, thiab TRUNCATE. Data Manipulation Language (DML) - Cov no SQL lus txib yog siv rau khaws cia, rov qab, hloov kho, thiab tshem tawm cov ntaub ntawv. Cov ntaub ntawv Manipulation Language lus txib yog: SELECT, INSERT, UPDATE, thiab DELETE.
Qhov thib ob, qhov lus txib SQL tshaj plaws yog dab tsi?
SELECT yog nyob deb ntawm feem ntau tseem ceeb nqe lus , as well as cov feem ntau siv nqe lus hauv SQL ntawv . Nws yog siv los muab cov ntaub ntawv los ntawm adatable.
SQL stands rau dab tsi?
Structured Query Language
Pom zoo:
Dab tsi yog cov lus nug siv los tso saib tag nrho cov npe ntawm cov ntxhuav hauv SQL Server?
Muaj ob txoj hauv kev los nrhiav txhua lub npe ntawm lub rooj, thawj qhov yog siv "QHOV" lo lus tseem ceeb thiab qhov thib ob yog los ntawm kev nug INFORMATION_SCHEMA
Yuav ua li cas koj tuaj yeem txav qhov taw tes nrawm nrawm mus rau qhov pib ntawm cov lus nug cov lus nug?
T lossis F: Nias Ctrl + txoj cai xub yuam sij kom txav qhov taw tes rau qhov pib ntawm lo lus tom ntej
Puas yog kev sau cov haujlwm uas tsim cov lus teb rau GraphQL cov lus nug?
Txhawm rau teb cov lus nug, schema yuav tsum muaj kev daws teeb meem rau txhua qhov chaw. Qhov kev sau ua haujlwm no hu ua 'resolver map'. Daim ntawv qhia no hais txog cov schema teb thiab hom rau ib txoj haujlwm
Cov kev txwv ntawm cov ntsiab lus tsom xam yog dab tsi?
Tuaj yeem siv sijhawm ntev heev. yog yuav muaj qhov yuam kev ntau ntxiv, tshwj xeeb tshaj yog thaum kev txheeb xyuas kev sib raug zoo yog siv los ua kom tau qib siab dua ntawm kev txhais lus. feem ntau yog tsis muaj lub hauv paus theoretical, los yog sim dhau kev ywj pheej los kos cov ntsiab lus inferences txog kev sib raug zoo thiab kev cuam tshuam hauv kev kawm
Cov lus nug dab tsi koj xav nug cov thawj coj hauv network txog lawv txoj haujlwm?
Network Administrator Job Interview Questions Koj nyob li cas tam sim no nrog koj cov kev txawj ntse thiab kev txawj ntse? Koj puas koom nrog ib pawg neeg siv online? Piav koj qhov kev nyuaj siab tshaj plaws thiab koj tau ua li cas. Koj qhov kev paub ntawm kev tswj hwm kev teeb tsa yog dab tsi? Koj lub tsev network teeb tsa zoo li cas? Koj yuav khaws koj lub network li cas?