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MongoDB introductory course study

Chapter1 MongoDB introductory course study (1)
1-1 What is MongoDB
1-2 MongoDB installation
1-3 Understanding of basic concepts
1-4 Simple NoSql
1-5 Operation collectionCollection
Chapter2 MongoDB introductory course study (2)
2-1 Operation Document Document
2-2 Conditional documents db.find
2-3 Document extraction with complex conditions db.find
2-4 Specify extracted fields
2-5 Documentation method sort limit skip
Chapter3 MongoDB introductory course study (3)
3-1 Document update update
3-2 Play with several special functions inc mul rename set unset
3-3 Special updates to the documentation upsert
3-4 Using indexes createIndex getIndexes
3-5 Backup and restore mongodump mongorestore

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