Big Data / NoSql

MongoDB

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show dbs – show all dababases
show collections – show all collections in database.
use [db name] – switch to the specific database.
db.[collection].find() – find records in the collection.
db.[collection].find({email:”[email protected]”}) – find specific value
db.[collection].findOne() – find one record in the collection.
db.[collection].findOne({email:”[email protected]”},{password:”12345″}) – find specific values
db.[collection].countDocuments() – count all records in a table/collection
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