There are many different libraries that allow you to query and manipulate data from your JavaScript application, and each varies in its design and level of abstraction.
Choosing an ORMĬhoosing an ORM or query builder for your Node.js app can be daunting. Various methods can be associated with the object, such as methods to return the preferred phone number, the home address, and so on. Each such address-book entry is treated as a single object by the programming language (it can be referenced by a single variable containing a pointer to the object, for instance).
The list of phone numbers would itself contain "PhoneNumber objects" and so on. This could be modeled in an object-oriented implementation by a "Person object" with an attribute/field to hold each data item that the entry comprises: the person's name, a list of phone numbers, and a list of addresses. For example, consider an address book entry that represents a single person along with zero or more phone numbers and zero or more addresses. In object-oriented programming, data-management tasks act on objects that are almost always non-scalar values.
#Nodejs orm free#
There are both free and commercial packages available that perform object–relational mapping, although some programmers opt to construct their own ORM tools. This creates, in effect, a "virtual object database" that can be used from within the programming language. Object–relational mapping (ORM, O/RM, and O/R mapping tool) in computer science is a programming technique for converting data between incompatible type systems using object-oriented programming languages. ORM Libraries for Node JS API development
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