In object-oriented programming,objects are the building blocks in developing a program.They are runtime entities.They may represent a person, a place, a bank account, a table of data or any item that the program handles.Objects encapsulates the data, and code to manipulate that data.The code designed to work on the data is known as methods in …
Object Type Casting in Java says that one object reference can be typecast into another object reference. We can use parent reference to hold child object. For example, Object class reference can hold String class object. Object str = new String(); We can also use interface reference to hold implemented class object. Runnable thread = …
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I hope you have followed our all post’s for creating a blog app,if you haven’t you should first check those because in those post’s we have discussed most of the concepts most of which we are going to use while building this app also. So first question arises in your mind is what is a …
I hope before reading this post you had read the other two posts on django. 1. https://padhle.com/models-in-django-free-django-tutorials/ 2. More About Models In Django-Free Django Tutorials So in this post we will discuss about three most common types of database relationships: many-to-one, many-to-many and one-to-one. Many-to-one relationships many-to-one relationship can be defined by django.db.models.ForeignKey. We can …
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For basic knowledge about what are the models in django first read this post: https://padhle.com/models-in-django-free-django-tutorials/. Fields In Django Models: One of the important and required part of a model is the list of database fields it defines.Fields in django are specified by class attributes. For example: from django.db import models class Musician(models.Model): first_name = models.CharField(max_length=50) last_name …
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