MongoDB Compass provides powerful graphical functionality to users without the need for a query language. But here I will introduce you to MongoDB Compass. Object ID: This data type is used to store the ID of the Document.Ĭode: This data type is used to store JavaScrip code into the Document.Īlthough there are many tools to support MongoDb administration such as Cluster control, MongoDB Compass, Nosqlclient, Mongo Management Studio or Studio 3T. You can define your own date time by creating a Date object and passing the day, month, and year into it. Symbol: This data type is used like a string, however, it is generally reserved for languages that use a specific symbol type.ĭate : This data type is used to store the current date and time in the UNIX time format. Null: This data type is used to store a Null value.īinary data: This data type is used to store binary data. Object: This data type is used for embedded documents. Regular expression: This data type is used to store Regular Expresion. Timestamp: Convenient for recording or marking when a Document was modified or added. Min/ Max keys: This data type is used to compare a value with the lowest and highest BSON elements.Īrray: This data type is used to store arrays or lists or multiple values into a key. Integer can be 32 bit or 64 bit depending on your server.īoolean: This data type is used to store a Boolean value (true/false).ĭouble: This data type is used to store floating point numeric values. Integer: This data type is used to store a numeric value. String: This is the most commonly used data type to hold data. JSON objects are a container where a field will be mapped to a value. JSON: is an extremely popular standard for data exchange on the web, is a human-readable data exchange format. It is mandatory so if you forget to create it, don't worry MongoDb will automatically create it for you.Ĭursor: In MongoDB, when the find() method is used to find the documents contained in the collection, this method returns a pointer that will point to the documents of the collection, now this pointer is called cursor. _id: _id is a special and mandatory in MongoDb, it is similar to when you declare a column of code of a table, it is the unique value of a document and helps distinguish between other documents. A document may contain one, many, or no fields at all.Īs the example above, a field is name: "Xuu" Here are some components included in MongoDb:ĭatabase: is a database of collections of these concepts just like SQL or AdminPHP side databases.Ĭollection: collection is equivalent to a table in MySQL that has not collected documents and collections do not have any structure rules.Įx: Nest is called a database containing 2 collections cats and usersĭocument: A Document is a record in a collection, consisting of field and value pairs.įor example: A document of the collection cats, cat has name and age fields with values Xu and 3.įield: is a field and data pair, it is similar to a column in MySQL. The process of checking compatibility when adding, deleting or updating data is fast, saving time. Because it is stored as JSON, you are free to insert information as you need. The advantage of MongoDB is its flexibility in storing different data sizes. Field values can be documents or arrays, and pairs of fields and values between collections are also non-binding. Unlike SQL or AdminPHP, MongoDb is similar to a JSON document which is a data structure consisting of field and value pairs. I usually ignore null and empty arrays if the field is an array.MongoDb is NoSQL database system, it means non-relational database. Select $unwind and then fill in the field you want, prefixed with $. If you go into Compass to the collection you want and go to the aggregation tab, you can unwind and group as such: Here's a way that I've been using in Compass.
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