mongo

1、还原数据库

mongorestore --username root --password root --authenticationDatabase admin --db geek mock

 2、语法

//创建校验
db.createCollection("students3", {
    validator: {
        $jsonSchema: {
            bsonType: "object",
            required: ["name", "year", "major", "address"],
            properties: {
                name: {
                    bsonType: "string",
                    description: "must be a string and is required"
                },
                year: {
                    bsonType: "int",
                    minimum: 2017,
                    maximum: 3017,
                    description: "must be an integer in [ 2017, 3017 ] and is required"
                },
                major: {
                    enum: ["Math", "English", "Computer Science", "History", null],
                    description: "can only be one of the enum values and is required"
                },
                gpa: {
                    bsonType: ["double"],
                    description: "must be a double if the field exists"
                },
                address: {
                    bsonType: "object",
                    required: ["city"],
                    properties: {
                        street: {
                            bsonType: "string",
                            description: "must be a string if the field exists"
                        },
                        city: {
                            bsonType: "string",
                            "description": "must be a string and is required"
                        }
                    }
                }
            }
        }
    }
})
//创建
db.students3.insertOne({
    "name": "wang",
    "year": NumberInt("2019"),
    "major": "English",
    "address": {
        "city": "hz"
    }
})

3、BSON