An OrderedDict is a dict that remembers the order that keys were first inserted. If a new entry overwrites an existing entry, the original insertion position is left unchanged. Deleting an entry and reinserting it will move it to the end. Ordered dictionary somehow can be used in the place where there is a use of hash Map and queue. It has characteristics of both into one. Like queue, it remembers the order and it also allows insertion and deletion at both ends. And like dictionary is also behaves as a hash map. 

An ordered dictionary is a data structure in Python that maintains the order of insertion of key-value pairs while allowing access to the values through their keys. Python provides two ways to create an ordered dictionary: using the collections module and using the built-in dictionary class.

The collections module provides the OrderedDict class, which can be used to create ordered dictionaries. The syntax for creating an ordered dictionary using the OrderedDict class is as follows: 

from collections import OrderedDict

my_dict = OrderedDict()

Once the dictionary is created, key-value pairs can be added to it using the my_dict[key] = value syntax. The order of the key-value pairs in the dictionary is maintained in the order in which they are added.

The built-in dictionary class in Python 3.7 and above also maintains the order of insertion of key-value pairs. Therefore, an ordered dictionary can be created using the following syntax: 

my_dict = {}

Once the dictionary is created, key-value pairs can be added to it using the my_dict[key] = value syntax. The order of the key-value pairs in the dictionary is maintained in the order in which they are added.

In addition to the basic operations of a dictionary such as adding, deleting, and accessing key-value pairs, ordered dictionaries also provide additional methods for manipulating the order of the key-value pairs. These methods include move_to_end(key, last=True), which moves the key-value pair with the specified key to the end of the ordered dictionary, and popitem(last=True), which removes and returns the last key-value pair in the ordered dictionary.