MongoDB for Developers with Python Transcripts
Chapter: MongoDB's shell and native query syntax
Lecture: Inserting documents in MongoDB
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0:01
Inserts are one of the simpler operations in MongoDB actually.
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So we just go db.collection name, in this case db.book.insert
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and we give it the thing to insert.
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Now, if we don't specify an id, an _id
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which generally we want to let the database generate
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but it's not always true, like we could have people and their primary key,
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their id could be there social security number, and that you would provide,
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so in this case, we're not going to provide an id,
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we're going to type in title and isbn, and those kinds of things.
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And then if we just do a find, that would come back and get the first one
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maybe say this is our first insert, we'd get something back like this,
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let's say we specified the isbn, the title,
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the author, the published and the publisher,
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this is a relationship over to the publisher table,
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which we haven't played with yet.
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So those were all set by us, you can see "Winning With MongoDB"
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and down here we have "Winning With MongoDB:,
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but the _id, because we didn't specify it was auto generated to an object id.
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So unless you have a good reason to pick another type of id,
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this is probably the best one for Mongo, but it could have been a string,
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like I said, it could have been a social security number
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or it could be just numerical if you want to have a 1234,
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all of those kind of put the burden on you to manage the uniqueness of that id
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and there is a unique disconstraint on _id for every table or collection.
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So that's how inserts work, you just give it this document
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and it stores it more or less directly in the database
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except for that it will generate this _id as an object id if needed.
