How does MongoDB store integers?

Below are the enlisted MongoDB data types:

String: This is the most commonly used data type in MongoDB to store data, BSON strings are of UTF-8.
Integer: In MongoDB, the integer data type is used to store an integer value.
Double: The double data type is used to store the floating-point values.

What is MongoDB ObjectId?

An ObjectID is a 12-byte Field Of BSON type. The first 4 bytes representing the Unix Timestamp of the document. The next 3 bytes are the machine Id on which the MongoDB server is running. The next 2 bytes are of process id. The last Field is 3 bytes used for increment the objectid.

Is MongoDB ObjectId unique?

ObjectID is automatically generated by the database drivers, and will be assigned to the _id field of each document. ObjectID can be considered globally unique for all practical purposes. ObjectID encodes the timestamp of its creation time, which may be used for queries or to sort by creation time.

Which of these types of data can be stored in a MongoDB collection?

MongoDB – Datatypes

String − This is the most commonly used datatype to store the data.
Integer − This type is used to store a numerical value.
Boolean − This type is used to store a boolean (true/ false) value.
Double − This type is used to store floating point values.

How does MongoDB store phone numbers?

You should use String type to store phone numbers as they may contain non-numeric characters for formatting etc. You should also ensure that it is of type string before saving it to mongodb. –
I did try that.
How do you update the field type?
Thanks!

Can I change _id in MongoDB?

Finally, keep in mind that the _id field is immutable — that is, once a document exists in your MongoDB system, it has, by definition, been assigned an _id, and you cannot change its primary key. That said, _id can be overridden when you insert new documents, but by default it will be populated with an ObjectID.

Why does MongoDB use _id?

In MongoDB, _id field as the primary key for the collection so that each document can be uniquely identified in the collection. The _id field contains a unique ObjectID value.

Is the _id property in MongoDB 100% unique?

The object ID is only unique as long as the counter does not overflow! The counter overflow problem is when the counter has reached its maximum capacity, leading to documents having the same object ID. Therefore, the object ID is almost unique but not 100% unique!

Is MongoDB _id sequential?

MongoDB does not have out-of-the-box auto-increment functionality, like SQL databases. By default, it uses the 12-byte ObjectId for the _id field as the primary key to uniquely identify the documents.

What type of data is MongoDB?

MongoDB Data Types MongoDB stores documents in BSON, which is the binary encoded format of JSON. Basically, the name BSON itself comes from Binary encoded JSON. The BSON data format provides various types, used when we store the JavaScript objects in the binary form.

What’s the difference between an objectId and a string?

ObjectId is 12 bytes when it’s stored internally, which is more compact than the hexadecimal string representation of it. The two are different things. You can reflow your whole DB and use a uniform _id field to solve this and make sure your code saves in the same format.

Can a table be used as an objectId?

If you register a table with the geodatabase and the table does contain a qualifying field (integer, not null), the existing column can be used as the ObjectID.

What is the maximum value of an objectId?

An ObjectID is a unique, not null integer field used to uniquely identify rows in tables in a geodatabase. ObjectIDs are limited to 32-bit values, which store a maximum value of 2,147,483,647.

How are object IDs stored in MongoDB?

But mongo seems to store them in some special way. Storing a string representation of the id is different from storing an object id as an object. Why is this? Doesn’t the string form have all the same information that the object form has?

How does MongoDB store integers?