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Next Section： Special updates to the documentation upsert
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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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notes
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![Front-end project-Shangyou [HTML/CSS/JS technology comprehensive practice]](https://img.php.cn/upload/course/000/000/068/63bfcb2974f91471.jpg)
![Zero-based front-end course [Vue advanced learning and practical application]](https://img.php.cn/upload/course/000/000/068/63bbd15353895588.jpg)
![WEB front-end tutorial [HTML5+CSS3+JS]](https://img.php.cn/upload/course/000/000/068/63ba60c8da520536.jpg)
![Apipost practical application [api, interface, automated testing, mock]](https://img.php.cn/upload/course/000/000/068/63b3c967a20f4861.jpg)
