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