2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
NoSQL lossis cov piv txwv tsis sib xws: MongoDB, Apache Cassandra, Redis, Couchbase thiab Apache HBase. Lawv yog qhov zoo tshaj plaws rau Rapid Application Development. NoSQL yog qhov kev xaiv zoo tshaj plaws rau cov ntaub ntawv hloov tau yooj yim nrog me me kom tsis muaj kev txwv.
Dab tsi yog qhov txawv ntawm cov ntaub ntawv sib raug zoo thiab cov ntaub ntawv tsis sib xws?
Txhawm rau xaus qhov sib txawv ntawm cov ntaub ntawv sib raug zoo thiab tsis muaj kev sib raug zoo: cov ntaub ntawv sib txuas khaws cov ntaub ntawv hauv kab thiab kab zoo li daim ntawv nthuav qhiathaum cov ntaub ntawv tsis sib raug zoo khaws cov ntaub ntawv tsis txhob, siv tus qauv cia (ib ntawm plaub) uas yog qhov zoo tshaj plaws rau hom ntaub ntawv nws khaws cia.
Qhov twg hauv qab no yog piv txwv ntawm cov ntaub ntawv tsis sib xws?
2) Cov ntaub ntawv tsis sib xws, tseem hu ua NoSQL databases, nrov tshaj plaws yog MongoDB, DocumentDB, Cassandra, Coachbase, HBase, Redis, thiab Neo4j. Cov databases no feem ntau muab faib ua plaub pawg: Cov khw muag khoom tseem ceeb, Cov khw muag khoom Graph, Cov khw muag khoom, thiab cov khw muag ntaub ntawv (saib Hom NoSQL databases).
Thaum twg koj yuav siv cov ntaub ntawv tsis cuam tshuam?
Cov ntaub ntawv tsis cuam tshuam feem ntau yog siv thaum ntau cov ntaub ntawv nyuaj thiab ntau haiv neeg yuav tsum tau teeb tsa. Piv txwv li, lub khw loj yuav muaj cov ntaub ntawv uas txhua tus neeg siv khoom muaj lawv tus kheej cov ntaub ntawv uas muaj tag nrho lawv cov ntaub ntawv, los ntawm lub npe thiab chaw nyob rau kev txiav txim keeb kwm thiabCov ntaub ntawv credit card.
NoSQL database piv txwv yog dab tsi?
MongoDB, CouchDB, CouchBase, Cassandra, HBase, Redis, Riak, Neo4J yog qhov nrov NoSQL databases piv txwv. MongoDB, CouchDB, CouchBase, Amazon SimpleDB, Riak, Lotus Notes yog cov ntaub ntawv-oriented NoSQL databases,. Neo4J, InfoGrid, Infinite Graph, OrientDB, FlockDB yog daim duab databases.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Dab tsi yog qhov txawv ntawm qhov piv txwv thiab piv txwv?
Yog lub ntsiab lus tsis yog "literal" (raws li sau), ces nws yog "figurative". Cov lus "Figurative" tuaj yeem suav nrog cov lus piv txwv, cov lus piv txwv, puns, exaggerations (hyperbole), thiab lwm yam. Puas yog piv txwv thiab piv txwv zoo ib yam?
Qhov twg hauv qab no yog cov piv txwv piv txwv?
Qee yam piv txwv ntawm cov piv txwv piv txwv yog daim duab qhia chaw, duab, duab kos, cov npe sib txuas, thiab cov kab kos. Dab tsi yog qhov piv txwv? Cov sawv cev Analogical ntes qee tus yam ntxwv ntawm qhov lawv sawv cev; symbolic sawv cev tsis muaj kev sib raug zoo rau qhov lawv sawv cev.
Qhov twg hauv qab no yog qhov piv txwv ntawm qhov tsis suav nrog cov lej tsis suav nrog?
Pi is a non-terminating, non-repeating decimal. π=3.141 592 653 589 793 238 462 643 383 279 … e is a non-terminating, non-repeating decimal. Ib qho piv txwv ntawm tus lej tsis suav nrog yog dab tsi? Piv txwv: 0.5, 2.456, 123.456, thiab lwm yam.
Piv txwv thiab qhov sib piv yog dab tsi?
Piv txwv li, yog tias koj xav tsom mus rau qhov sib piv ob yam koj yuav tsis xaiv apples thiab txiv kab ntxwv; es, koj tuaj yeem xaiv los sib piv thiab sib piv ob hom txiv kab ntxwv lossis ob hom txiv apples kom pom qhov sib txawv me ntsis. Piv txwv li, Red Delicious apples qab zib, thaum Granny Smiths yog tart thiab acidic.
